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Swapnil Bhartiya has been at 1 events

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Arnold Schwarzenegger124,423Come hangout with Arnold to discuss his new autobiography, Total Recall: My Unbelievably True Life Story. www.schwarzenegger.com/totalrecallHangout with Arnold2012-10-05 23:30:001499  

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Activity

Average numbers for the latest posts (max. 50 posts, posted within the last 4 weeks)

3
comments per post
2
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425
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Top posts in the last 50 posts

Most comments: 29

posted image

2015-08-26 20:06:47 (29 comments, 10 reshares, 60 +1s)Open 

The greatest addition to Plasma desktop is the arrival of Application Dashboard launcher. I was a huge fan of Homerun launcher and used it as the default launcher, so the Application Dashboard is all I needed.

After using it I actually like it much more than Ubuntu Dash and Gnome. I find it much more organized, clearer, clutter free and focused on increasing productivity instead of cramming unwanted ads in that tight space (I am looking at you, Ubuntu).

Most reshares: 14

posted image

2015-08-28 18:10:11 (19 comments, 14 reshares, 80 +1s)Open 

Google's Linux-based Chrome OS is setting new standards in many ways; it's the first consumer grade operating system which started to offer free of cost lifetime upgrades (Apple started offering free Mac upgrades later in 2013). 

Chrome OS offers upgrades in a fashion not seen before: there are two images of the operating system installed on a system -- let's call them A and B. At any given time a user is running either of the two images, while the second one stays in inactive mode. Whenever an update is available it replaces the inactive image. Every time you reboot your Chromebook, it switches the OS and boots into the latest one. As a result you are always running the latest version of Chrome OS without having to wait for some 5-10 minutes for Mac OS X upgrades of even a day for Windows upgrade.

Google's continuous improvements to Chrome OS aren't always hyped,... more »

Most plusones: 80

posted image

2015-08-28 18:10:11 (19 comments, 14 reshares, 80 +1s)Open 

Google's Linux-based Chrome OS is setting new standards in many ways; it's the first consumer grade operating system which started to offer free of cost lifetime upgrades (Apple started offering free Mac upgrades later in 2013). 

Chrome OS offers upgrades in a fashion not seen before: there are two images of the operating system installed on a system -- let's call them A and B. At any given time a user is running either of the two images, while the second one stays in inactive mode. Whenever an update is available it replaces the inactive image. Every time you reboot your Chromebook, it switches the OS and boots into the latest one. As a result you are always running the latest version of Chrome OS without having to wait for some 5-10 minutes for Mac OS X upgrades of even a day for Windows upgrade.

Google's continuous improvements to Chrome OS aren't always hyped,... more »

Latest 50 posts

posted image

2015-09-01 19:39:20 (2 comments, 0 reshares, 5 +1s)Open 

Before I go any further, let me state for the record that I am an Android user; I have never owned an iPhone. But in order to test Android Wear on iOS, I purchased a used iPhone 5s.

Before I go any further, let me state for the record that I am an Android user; I have never owned an iPhone. But in order to test Android Wear on iOS, I purchased a used iPhone 5s.___

posted image

2015-09-01 19:38:38 (0 comments, 0 reshares, 2 +1s)Open 

Before I go any further, let me state for the record that I am an Android user; I have never owned an iPhone. But in order to test Android Wear on iOS, I purchased a used iPhone 5s.

Before I go any further, let me state for the record that I am an Android user; I have never owned an iPhone. But in order to test Android Wear on iOS, I purchased a used iPhone 5s.___

posted image

2015-09-01 19:38:19 (0 comments, 0 reshares, 3 +1s)Open 

Before I go any further, let me state for the record that I am an Android user; I have never owned an iPhone. But in order to test Android Wear on iOS, I purchased a used iPhone 5s.

Before I go any further, let me state for the record that I am an Android user; I have never owned an iPhone. But in order to test Android Wear on iOS, I purchased a used iPhone 5s.___

posted image

2015-09-01 17:55:49 (0 comments, 2 reshares, 8 +1s)Open 

The Linux Foundation, the nonprofit organization that sponsors Linus Torvalds and runs many programs to accelerate the growth of Linux, is now giving away free Chromebooks to those who enroll in one of its training courses during September.

The Linux Foundation, the nonprofit organization that sponsors Linus Torvalds and runs many programs to accelerate the growth of Linux, is now giving away free Chromebooks to those who enroll in one of its training courses during September.___

posted image

2015-09-01 17:55:40 (4 comments, 4 reshares, 29 +1s)Open 

The Linux Foundation, the nonprofit organization that sponsors Linus Torvalds and runs many programs to accelerate the growth of Linux, is now giving away free Chromebooks to those who enroll in one of its training courses during September.

The Linux Foundation, the nonprofit organization that sponsors Linus Torvalds and runs many programs to accelerate the growth of Linux, is now giving away free Chromebooks to those who enroll in one of its training courses during September.___

posted image

2015-09-01 16:09:44 (1 comments, 0 reshares, 6 +1s)Open 

Google gets a new Logo.

Google gets a new Logo.___

posted image

2015-09-01 11:03:20 (2 comments, 1 reshares, 3 +1s)Open 

SUSE's +Michael Miller says: Acquisition by Micro Focus has been a great thing for SUSE. They are very aware of SUSE's growth potential and the dynamic market we are in. They like the growth they have seen in SUSE, which is part of what transpired the transition. They have been making investments into the business since the acquisition. I would say that they love what they saw in SUSE, and after the acquisition they have given us great support. They kept our SUSE leadership team intact -- with Nils Brauckmann, President & General Manager and his team completely the same as it has been now for years, working together.

SUSE's +Michael Miller says: Acquisition by Micro Focus has been a great thing for SUSE. They are very aware of SUSE's growth potential and the dynamic market we are in. They like the growth they have seen in SUSE, which is part of what transpired the transition. They have been making investments into the business since the acquisition. I would say that they love what they saw in SUSE, and after the acquisition they have given us great support. They kept our SUSE leadership team intact -- with Nils Brauckmann, President & General Manager and his team completely the same as it has been now for years, working together.___

posted image

2015-09-01 10:54:18 (0 comments, 7 reshares, 1 +1s)Open 

SUSE's +Michael Miller says: Acquisition by Micro Focus has been a great thing for SUSE. They are very aware of SUSE's growth potential and the dynamic market we are in. They like the growth they have seen in SUSE, which is part of what transpired the transition. They have been making investments into the business since the acquisition. I would say that they love what they saw in SUSE, and after the acquisition they have given us great support. They kept our SUSE leadership team intact -- with Nils Brauckmann, President & General Manager and his team completely the same as it has been now for years, working together.

SUSE's +Michael Miller says: Acquisition by Micro Focus has been a great thing for SUSE. They are very aware of SUSE's growth potential and the dynamic market we are in. They like the growth they have seen in SUSE, which is part of what transpired the transition. They have been making investments into the business since the acquisition. I would say that they love what they saw in SUSE, and after the acquisition they have given us great support. They kept our SUSE leadership team intact -- with Nils Brauckmann, President & General Manager and his team completely the same as it has been now for years, working together.___

posted image

2015-08-31 23:13:04 (2 comments, 2 reshares, 9 +1s)Open 

It's way, way past time to do it in. But regardless of how I feel about the security-rotted program, Google's putting a stake in Flash advertising heart.

It's way, way past time to do it in. But regardless of how I feel about the security-rotted program, Google's putting a stake in Flash advertising heart.___

posted image

2015-08-31 21:09:31 (0 comments, 1 reshares, 5 +1s)Open 

I'm not alone in my firm belief that open source software has an edge over proprietary software because of easy access to source code, allowing anyone to audit it for holes. Just look at all the hacks from this year alone that caused billions of dollars in losses, all of them exploited some vulnerability in proprietary software.

Unlike proprietary companies that are often hostile towards security researchers (I'm looking at you, Oracle), open source companies continue to encourage developers to find holes in their products by rewarding them, for finding such vulnerabilities.

I'm not alone in my firm belief that open source software has an edge over proprietary software because of easy access to source code, allowing anyone to audit it for holes. Just look at all the hacks from this year alone that caused billions of dollars in losses, all of them exploited some vulnerability in proprietary software.

Unlike proprietary companies that are often hostile towards security researchers (I'm looking at you, Oracle), open source companies continue to encourage developers to find holes in their products by rewarding them, for finding such vulnerabilities.___

posted image

2015-08-31 21:03:45 (4 comments, 2 reshares, 28 +1s)Open 

I'm not alone in my firm belief that open source software has an edge over proprietary software because of easy access to source code, allowing anyone to audit it for holes. Just look at all the hacks from this year alone that caused billions of dollars in losses, all of them exploited some vulnerability in proprietary software.

Unlike proprietary companies that are often hostile towards security researchers (I'm looking at you, Oracle), open source companies continue to encourage developers to find holes in their products by rewarding them, for finding such vulnerabilities.

I'm not alone in my firm belief that open source software has an edge over proprietary software because of easy access to source code, allowing anyone to audit it for holes. Just look at all the hacks from this year alone that caused billions of dollars in losses, all of them exploited some vulnerability in proprietary software.

Unlike proprietary companies that are often hostile towards security researchers (I'm looking at you, Oracle), open source companies continue to encourage developers to find holes in their products by rewarding them, for finding such vulnerabilities.___

posted image

2015-08-31 20:41:54 (6 comments, 0 reshares, 9 +1s)Open 

One of the nice things about KDE's new Application Dashboard is that you can still see whatever it was you were doing before you brought it up. It seems like a silly thing to point out, but sometimes workflow gets interrupted and a visual cue as to what you were doing can go a long way to prevent, "Where the hell was I?" syndrome.

One of the nice things about KDE's new Application Dashboard is that you can still see whatever it was you were doing before you brought it up. It seems like a silly thing to point out, but sometimes workflow gets interrupted and a visual cue as to what you were doing can go a long way to prevent, "Where the hell was I?" syndrome.___

2015-08-31 19:22:35 (1 comments, 0 reshares, 4 +1s)Open 

Nice to see Android Wear working with iPhone 5s

Nice to see Android Wear working with iPhone 5s___

2015-08-31 03:13:47 (15 comments, 1 reshares, 12 +1s)Open 

It's disturbing to see the rise of German Nazi like environment in the US...the current GOP sound very much like the German Nazi party with extreme hate and extremism towards certain groups. They are becoming the very evil we fought in the WW2. What's next, Bush and the gang will build concentration camps?

It's disturbing to see the rise of German Nazi like environment in the US...the current GOP sound very much like the German Nazi party with extreme hate and extremism towards certain groups. They are becoming the very evil we fought in the WW2. What's next, Bush and the gang will build concentration camps?___

posted image

2015-08-31 02:41:17 (0 comments, 0 reshares, 1 +1s)Open 

___

posted image

2015-08-30 19:03:26 (15 comments, 8 reshares, 36 +1s)Open 

___

posted image

2015-08-30 17:41:10 (0 comments, 0 reshares, 3 +1s)Open 

Umbonia Spinosa
These thorn bugs are related to cicadas, and use their beaks to pierce plant stems to feed upon their sap. Their strange appearance still poses many questions to scientists.

Females lay their eggs in the tender bark of twigs and the eggs hatch about 20 days later. The female actively tends her brood or colony, which can number from 15 to 50 individuals. Young nymphs have three horns instead of the one seen on the adults. While four generations occur per year, females lay only a single clutch of eggs.

Know more:
http://entomology.ifas.ufl.edu/creatures/orn/thorn_bug.htm

Image credit: Colin Hutton

#biodiversity   #thornbug   #coolcritters  

Umbonia Spinosa
These thorn bugs are related to cicadas, and use their beaks to pierce plant stems to feed upon their sap. Their strange appearance still poses many questions to scientists.

Females lay their eggs in the tender bark of twigs and the eggs hatch about 20 days later. The female actively tends her brood or colony, which can number from 15 to 50 individuals. Young nymphs have three horns instead of the one seen on the adults. While four generations occur per year, females lay only a single clutch of eggs.

Know more:
http://entomology.ifas.ufl.edu/creatures/orn/thorn_bug.htm

Image credit: Colin Hutton

#biodiversity   #thornbug   #coolcritters  ___

posted image

2015-08-30 00:30:29 (0 comments, 1 reshares, 4 +1s)Open 

___

posted image

2015-08-30 00:04:22 (0 comments, 1 reshares, 2 +1s)Open 

Before we start, I would like to ask you not to misuse the information in this article. It is meant for people who need to access their remote data while at the office and have no other way doing it, because of company’s firewall and proxy restrictions. Even though this can be used to access some of the most frequently used social networks, I highly encourage you do not do it, especially if your company’s policy disallow such access.

Before we start, I would like to ask you not to misuse the information in this article. It is meant for people who need to access their remote data while at the office and have no other way doing it, because of company’s firewall and proxy restrictions. Even though this can be used to access some of the most frequently used social networks, I highly encourage you do not do it, especially if your company’s policy disallow such access.___

posted image

2015-08-29 22:14:35 (1 comments, 0 reshares, 2 +1s)Open 

Seems the France train attack succeeded in its likely goal - not murder but auto-immune harm to European liberty

Seems the France train attack succeeded in its likely goal - not murder but auto-immune harm to European liberty___

posted image

2015-08-29 19:29:45 (2 comments, 0 reshares, 1 +1s)Open 

___

posted image

2015-08-29 19:29:37 (0 comments, 1 reshares, 1 +1s)Open 

___

posted image

2015-08-29 16:53:00 (2 comments, 0 reshares, 2 +1s)Open 

Obama defends Arctic drilling decision on eve of Alaska climate change trip - http://www.theguardian.com/environment/2015/aug/29/obama-arctic-drilling-alaska-trip-climate-change “self-defeating hypocrisy”.

Obama defends Arctic drilling decision on eve of Alaska climate change trip - http://www.theguardian.com/environment/2015/aug/29/obama-arctic-drilling-alaska-trip-climate-change “self-defeating hypocrisy”.___

posted image

2015-08-29 03:01:51 (1 comments, 0 reshares, 10 +1s)Open 

D750 is here. Love the camera...

D750 is here. Love the camera...___

posted image

2015-08-28 18:18:08 (3 comments, 2 reshares, 12 +1s)Open 

Google's Linux-based Chrome OS is setting new standards in many ways; it's the first consumer grade operating system which started to offer free of cost lifetime upgrades (Apple started offering free Mac upgrades later in 2013). 

Chrome OS offers upgrades in a fashion not seen before: there are two images of the operating system installed on a system -- let's call them A and B. At any given time a user is running either of the two images, while the second one stays in inactive mode. Whenever an update is available it replaces the inactive image. Every time you reboot your Chromebook, it switches the OS and boots into the latest one. As a result you are always running the latest version of Chrome OS without having to wait for some 5-10 minutes for Mac OS X upgrades of even a day for Windows upgrade.

Google's continuous improvements to Chrome OS aren't always hyped,... more »

Google's Linux-based Chrome OS is setting new standards in many ways; it's the first consumer grade operating system which started to offer free of cost lifetime upgrades (Apple started offering free Mac upgrades later in 2013). 

Chrome OS offers upgrades in a fashion not seen before: there are two images of the operating system installed on a system -- let's call them A and B. At any given time a user is running either of the two images, while the second one stays in inactive mode. Whenever an update is available it replaces the inactive image. Every time you reboot your Chromebook, it switches the OS and boots into the latest one. As a result you are always running the latest version of Chrome OS without having to wait for some 5-10 minutes for Mac OS X upgrades of even a day for Windows upgrade.

Google's continuous improvements to Chrome OS aren't always hyped, but that doesn't mean they aren't worthy of a little attention.___

posted image

2015-08-28 18:10:11 (19 comments, 14 reshares, 80 +1s)Open 

Google's Linux-based Chrome OS is setting new standards in many ways; it's the first consumer grade operating system which started to offer free of cost lifetime upgrades (Apple started offering free Mac upgrades later in 2013). 

Chrome OS offers upgrades in a fashion not seen before: there are two images of the operating system installed on a system -- let's call them A and B. At any given time a user is running either of the two images, while the second one stays in inactive mode. Whenever an update is available it replaces the inactive image. Every time you reboot your Chromebook, it switches the OS and boots into the latest one. As a result you are always running the latest version of Chrome OS without having to wait for some 5-10 minutes for Mac OS X upgrades of even a day for Windows upgrade.

Google's continuous improvements to Chrome OS aren't always hyped,... more »

Google's Linux-based Chrome OS is setting new standards in many ways; it's the first consumer grade operating system which started to offer free of cost lifetime upgrades (Apple started offering free Mac upgrades later in 2013). 

Chrome OS offers upgrades in a fashion not seen before: there are two images of the operating system installed on a system -- let's call them A and B. At any given time a user is running either of the two images, while the second one stays in inactive mode. Whenever an update is available it replaces the inactive image. Every time you reboot your Chromebook, it switches the OS and boots into the latest one. As a result you are always running the latest version of Chrome OS without having to wait for some 5-10 minutes for Mac OS X upgrades of even a day for Windows upgrade.

Google's continuous improvements to Chrome OS aren't always hyped, but that doesn't mean they aren't worthy of a little attention.___

posted image

2015-08-28 15:48:26 (2 comments, 1 reshares, 6 +1s)Open 

Ah, the dangers of using stock photography ;-)
 +Mitsubishi Electric Germany 

hat-tip: popbitch.com

Ah, the dangers of using stock photography ;-)
 +Mitsubishi Electric Germany 

hat-tip: popbitch.com___

posted image

2015-08-28 11:39:37 (0 comments, 0 reshares, 3 +1s)Open 

Me & my oldest son when he was 1-year-old & now at 16. +Google Photos recognized his face that far back. Wow, impressive.

Me & my oldest son when he was 1-year-old & now at 16. +Google Photos recognized his face that far back. Wow, impressive.___

2015-08-28 11:23:19 (1 comments, 0 reshares, 2 +1s)Open 

Had a few minutes before leaving for lunch with workmates, so set up an instance of the rawdog blog aggregator on my server. In minutes, it was running perfectly, including the RSS generator plugin ... which I  noticed was written by a guy I've known for a while -> +Jonathan Riddell ... the free software world is indeed a "small world" :)

Had a few minutes before leaving for lunch with workmates, so set up an instance of the rawdog blog aggregator on my server. In minutes, it was running perfectly, including the RSS generator plugin ... which I  noticed was written by a guy I've known for a while -> +Jonathan Riddell ... the free software world is indeed a "small world" :)___

posted image

2015-08-28 11:22:16 (0 comments, 0 reshares, 4 +1s)Open 

___

posted image

2015-08-28 01:14:37 (0 comments, 2 reshares, 9 +1s)Open 

Ubuntu does almost as well on OpenStack. I think it's probably a safe bet that no matter what the cloud, Ubuntu is, if not number one, pretty darn close.

Ubuntu does almost as well on OpenStack. I think it's probably a safe bet that no matter what the cloud, Ubuntu is, if not number one, pretty darn close.___

posted image

2015-08-28 01:03:18 (1 comments, 3 reshares, 13 +1s)Open 

Drone checks out a wind turbine and finds some dude sunbathing on top.

What a view he must have. 

Drone checks out a wind turbine and finds some dude sunbathing on top.

What a view he must have. ___

posted image

2015-08-27 20:40:13 (2 comments, 0 reshares, 6 +1s)Open 

Power of Linux and Open Source. He could not have done that with Windows or iOS to realize his product? They are both closed source technologies, locked behind fortified walls, away from human civilization to learn, and built on top of it; so unnatural. So, as expected, Sculley restored to using Android, the #1 competitor of Apple's iOS. The same OS that late Steve Jobs wanted to destroy, even if he had to spent last penny at Apple.

Power of Linux and Open Source. He could not have done that with Windows or iOS to realize his product? They are both closed source technologies, locked behind fortified walls, away from human civilization to learn, and built on top of it; so unnatural. So, as expected, Sculley restored to using Android, the #1 competitor of Apple's iOS. The same OS that late Steve Jobs wanted to destroy, even if he had to spent last penny at Apple.___

posted image

2015-08-27 20:39:50 (18 comments, 8 reshares, 37 +1s)Open 

Power of Linux and Open Source. He could not have done that with Windows or iOS to realize his product? They are both closed source technologies, locked behind fortified walls, away from human civilization to learn, and built on top of it; so unnatural. So, as expected, Sculley restored to using Android, the #1 competitor of Apple's iOS. The same OS that late Steve Jobs wanted to destroy, even if he had to spent last penny at Apple.

Power of Linux and Open Source. He could not have done that with Windows or iOS to realize his product? They are both closed source technologies, locked behind fortified walls, away from human civilization to learn, and built on top of it; so unnatural. So, as expected, Sculley restored to using Android, the #1 competitor of Apple's iOS. The same OS that late Steve Jobs wanted to destroy, even if he had to spent last penny at Apple.___

posted image

2015-08-27 19:22:31 (1 comments, 0 reshares, 7 +1s)Open 

___

posted image

2015-08-26 21:01:25 (5 comments, 0 reshares, 11 +1s)Open 

After 3 years breaking up with Nikon D7000 and ordered Nikon d750..arriving this Friday, time to move to full format sensor. 

After 3 years breaking up with Nikon D7000 and ordered Nikon d750..arriving this Friday, time to move to full format sensor. ___

posted image

2015-08-26 20:07:05 (5 comments, 3 reshares, 14 +1s)Open 

The greatest addition to Plasma desktop is the arrival of Application Dashboard launcher. I was a huge fan of Homerun launcher and used it as the default launcher, so the Application Dashboard is all I needed.

After using it I actually like it much more than Ubuntu Dash and Gnome. I find it much more organized, clearer, clutter free and focused on increasing productivity instead of cramming unwanted ads in that tight space (I am looking at you, Ubuntu).

The greatest addition to Plasma desktop is the arrival of Application Dashboard launcher. I was a huge fan of Homerun launcher and used it as the default launcher, so the Application Dashboard is all I needed.

After using it I actually like it much more than Ubuntu Dash and Gnome. I find it much more organized, clearer, clutter free and focused on increasing productivity instead of cramming unwanted ads in that tight space (I am looking at you, Ubuntu).___

posted image

2015-08-26 20:06:47 (29 comments, 10 reshares, 60 +1s)Open 

The greatest addition to Plasma desktop is the arrival of Application Dashboard launcher. I was a huge fan of Homerun launcher and used it as the default launcher, so the Application Dashboard is all I needed.

After using it I actually like it much more than Ubuntu Dash and Gnome. I find it much more organized, clearer, clutter free and focused on increasing productivity instead of cramming unwanted ads in that tight space (I am looking at you, Ubuntu).

The greatest addition to Plasma desktop is the arrival of Application Dashboard launcher. I was a huge fan of Homerun launcher and used it as the default launcher, so the Application Dashboard is all I needed.

After using it I actually like it much more than Ubuntu Dash and Gnome. I find it much more organized, clearer, clutter free and focused on increasing productivity instead of cramming unwanted ads in that tight space (I am looking at you, Ubuntu).___

posted image

2015-08-26 17:59:28 (0 comments, 0 reshares, 0 +1s)Open 

___

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2015-08-26 15:47:01 (0 comments, 1 reshares, 3 +1s)Open 

This is a ticking time-bomb of an Android security hole. If you have Recordable Activator on your smartphone or tablet: Uninstall it. Now.

This is a ticking time-bomb of an Android security hole. If you have Recordable Activator on your smartphone or tablet: Uninstall it. Now.___

posted image

2015-08-26 15:34:37 (2 comments, 0 reshares, 5 +1s)Open 

___

posted image

2015-08-26 13:14:58 (6 comments, 0 reshares, 6 +1s)Open 

“Watch the users use your product,” he said, in his rather sweet tone. Then “sit on your fucking hands while they use it … and don’t be an asshole when you get feedback.” - ESR.

Yup!___“Watch the users use your product,” he said, in his rather sweet tone. Then “sit on your fucking hands while they use it … and don’t be an asshole when you get feedback.” - ESR.

2015-08-26 12:17:04 (0 comments, 0 reshares, 0 +1s)Open 

Any words against Nikon d750?

Any words against Nikon d750?___

posted image

2015-08-26 02:57:59 (0 comments, 0 reshares, 0 +1s)Open 

___

posted image

2015-08-25 21:10:33 (2 comments, 0 reshares, 8 +1s)Open 

A version of this image was posted [1] with the question: "Will these jellyfish ever make it back to their original place?" +Kimberly Chapman pointed out the obvious "yes, because it's an animated GIF and those loop." But here's a mathematical treat for you: even if it weren't an animated GIF, even if these jellyfish were being moved around by a program using random numbers, I could guarantee that they obviously repeat.

Why? Let's imagine a simpler case for a moment, involving a 2x2 grid of jellyfish, each of a different color so we can tell them apart. There are 24 possible ways we could arrange the jellyfish: if you start with an empty grid, there are four places to put the red jellyfish; for each of those places, there are three remaining possible places to put the blue one; for each of those, there are two remaining possible places to put the green one;... more »

A version of this image was posted [1] with the question: "Will these jellyfish ever make it back to their original place?" +Kimberly Chapman pointed out the obvious "yes, because it's an animated GIF and those loop." But here's a mathematical treat for you: even if it weren't an animated GIF, even if these jellyfish were being moved around by a program using random numbers, I could guarantee that they obviously repeat.

Why? Let's imagine a simpler case for a moment, involving a 2x2 grid of jellyfish, each of a different color so we can tell them apart. There are 24 possible ways we could arrange the jellyfish: if you start with an empty grid, there are four places to put the red jellyfish; for each of those places, there are three remaining possible places to put the blue one; for each of those, there are two remaining possible places to put the green one; and once you've chosen those three, there's only one place the yellow one could go. So there are 4*3*2*1=24 possible jellyfish patterns. (Written 4!, "4 factorial")

Each time the jellyfish move, we move from one of these 24 configurations into another. As it happens, the motions below are very limited -- each jellyfish has to move onto a dot next door -- but that turns out not to matter, because even if the jellyfish could teleport, they'd still have to repeat.

Why? Imagine that we look at the first 25 moves. The jellyfish will end up in 25 configurations, but there are only 24 different configurations total, which means that at least one configuration had to happen twice!

This is called the pigeonhole principle: if you have N+1 pigeons in N pigeonholes, at least one hole has to contain two pigeons. (In this case, you have 25 configurations in 24 distinct slots)

If the rule going from one configuration to the next is deterministic -- that is, if the next move depends only on where the jellyfish are right now -- then you know that once a single repetitive loop happens, that loop will continue to repeat forever, because you're back at the first stage of the loop and will then have to go on to the second one, etc.

If the rule isn't deterministic -- say, if each time the jellyfish move randomly -- then no particular pattern is guaranteed to repeat, but you know that no more than once every 25 moves, at least once the jellyfish will repeat their pattern.

The same thing is true for this bigger grid; you just need to wait a bit longer. The 16x16 grid below has 256 jellyfish, so you need to wait for 256!+1 steps -- that's 256*255*...*3*2*1 + 1 steps, or about 8*10^506 steps [2] -- but no matter what, the jellyfish are absolutely guaranteed to repeat.

What's even more interesting is that this may apply to more than just jellyfish. One set of rules that we know are deterministic are the laws of physics. [3] Now, an interesting open question in physics is: is there a minimum granularity of spacetime, so that we can think of the entire universe as being on some kind of extremely fine grid? (When I say "extremely fine," I mean a grid size of the Planck length, about 1.6*10^-35 meters. For comparison, that's as much smaller than a proton as a proton is smaller than the San Francisco Bay Area.)

There are some reasons to believe that this may actually be true (although the geometry is a lot more complicated than a simple grid, and in fact "geometry" isn't even the right word for it; the whole expansion of the universe, from the big bang on, is part of it). If it is, then there's something interesting: we could imagine the entire universe as a gigantic grid, and the current state of the universe is given by deterministic laws about what's on that grid, then we know that the state of the universe itself must ultimately repeat.

Of course, "ultimately" is a pretty long time horizon: if you think the number below is big, that's what we got with only 256 jellyfish. The total number of "jellyfish" needed to describe the universe is going to be something like 10^245, and so the number of moves it would take would be unimaginably huge.

But if this repetition is real, then it has some very interesting consequences. For example, it's one way to explain why we happen to observe physical constants in our universe that are consistent with the existence of human life. [4] If those "constants" are actually controlled by the state of the universe, and the universe ultimately steps through all possible states, then it isn't surprising that we'll look out the window and see the constants that we could survive in; when the universe was in all of those other possible states, we weren't around to see it.

If, on the other hand, the universe has infinitely many states in it, then no recurrence need ever happen; it can keep changing indefinitely, and the entire argument above falls apart. This is one of the very few times that "finite but very big" and "infinite" are meaningfully different in physics.

This sort of analysis is called an "anthropic" analysis, and while it seems unsatisfying in some ways -- it doesn't explain the values of the constants, after all, or tell us what other constants might allow us to exist, it just tells us why they happen to be that right now -- it's a real possibility that this is what's actually going on. The entire debate over this, whether these recurrences (they're called Poincaré Recurrences, after the French mathematician who first described the math above) occur in nature and whether Anthropy is an explanation for the world, is a major open question in fundamental physics today.

So whether the jellyfish are moving in an animated GIF or powering the basic laws of physics, remember this: Finite patterns must always repeat; infinite patterns don't have to.

And now, you may return to staring at the GIF to your heart's content.

[1] By +AsapSCIENCE, but without real source credit. I strongly suspect, but cannot verify, that this is the work of the great Dave Whyte of beesandbombs.tumblr.com, which if you like GIFs like these you should absolutely check out. If anyone knows where this image actually came from, I'd love to know.

[2] If you want to be precise about it, it's 857,817,775,342,842,654,119,082,271,681,232,625,157,781,520,279,485,619,859,655,650,377,269,452,553,147,589,377,440,291,360,451,408,450,375,885,342,336,584,306,157,196,834,693,696,475,322,289,288,497,426,025,679,637,332,563,368,786,442,675,207,626,794,560,187,968,867,971,521,143,307,702,077,526,646,451,464,709,187,326,100,832,876,325,702,818,980,773,671,781,454,170,250,523,018,608,495,319,068,138,257,481,070,252,817,559,459,476,987,034,665,712,738,139,286,205,234,756,808,218,860,701,203,611,083,152,093,501,947,437,109,101,726,968,262,861,606,263,662,435,022,840,944,191,408,424,615,936,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,001 steps.

[3] You may have heard something about "quantum randomness," but this isn't actually randomness; the actual evolution of wave functions is completely, 100%, deterministic, even in quantum mechanics.

[4] The Standard Model of particle physics is controlled by about 20 basic constants, like the mass of the electron and the strength of gravity. Our world is weirdly sensitive to some of them: if the down quark were 10% heavier, say, then stars would never form, and neither would nearly any other kind of matter. What controls these 20 values? Good question. We don't know yet.___

posted image

2015-08-25 21:09:52 (1 comments, 1 reshares, 5 +1s)Open 

That's quite some European mess.

If it weren't so serious, it would almost be comical...___That's quite some European mess.

posted image

2015-08-25 17:25:28 (4 comments, 0 reshares, 18 +1s)Open 

New Plasma on my Arch system! Review coming soon!

New Plasma on my Arch system! Review coming soon!___

posted image

2015-08-25 17:24:03 (0 comments, 0 reshares, 2 +1s)Open 

The moral of this story is Know Your License. This applies to programmers and writers just as much it does to photographers. 

The moral of this story is Know Your License. This applies to programmers and writers just as much it does to photographers. ___

posted image

2015-08-25 17:03:37 (0 comments, 0 reshares, 10 +1s)Open 

I believe his work has a stronger and much deeper impact on human society than the software created by either Steve Jobs or Bill Gates. Torvalds is building the modern IT world by breeding a new culture where knowledge is not kept locked behind fortified walls, but is shared openly with the rest of the civilization to learn and build upon. 

I believe his work has a stronger and much deeper impact on human society than the software created by either Steve Jobs or Bill Gates. Torvalds is building the modern IT world by breeding a new culture where knowledge is not kept locked behind fortified walls, but is shared openly with the rest of the civilization to learn and build upon. ___

posted image

2015-08-25 15:55:10 (0 comments, 1 reshares, 5 +1s)Open 

___

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