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[Heisenberg's uncertainty principle turns up everywhere in quantum mechanics. The idea is that certain types of measurements like position and momentum are paired. By measuring one of the pair, we generate uncertainty in the other. This is also referred to as quantum back-action: the thing you are measuring pushes back on the measuring system, which generates uncertainty in some other property. This fundamental idea has some serious consequences when it comes to measuring very small stuff, like gravitational waves. ...]

"Scientists discover a new planet that might be able to support life. A drug that targets certain cancer receptors. Evidence of a previously unknown branch of human ancestors. Extreme weather. Dinosaurs had feathers? Who the hell knew ravens were so clever! And you saw the story on Facebook, on Twitter, in an email from your mom. Then you shared it to your coworker via Slack, your boss over lunch, from a barstool during your date that evening."

"Scientists discover a new planet that might be able to support life. A drug that targets certain cancer receptors. Evidence of a previously unknown branch of human ancestors. Extreme weather. Dinosaurs had feathers? Who the hell knew ravens were so clever! And you saw the story on Facebook, on Twitter, in an email from your mom. Then you shared it to your coworker via Slack, your boss over lunch, from a barstool during your date that evening."

[Rules to live by It's not just knowing how to set up and maintain your servers and understanding how system commands work that makes you a good system administrator -- or even knowing how to fix things when something breaks down, how to monitor performance, how to manage backups, or how to craft superbly clever scripts. It's knowing...]

"As the workforce becomes more mobile and employers look for ways to improve productivity, collaboration software become increasingly popular. According to a June 2016 study from Markets and Markets, organizations will spend $23.39 billion on cloud-based collaboration software tools this year. By 2021, the analysts expect the market to grow to $42.57 billion, for a compound annual growth rate of 12.7 percent."

"Richard Stallman's personal site. https://stallman.org For current political commentary, see the daily political notes. RMS' Bio | The GNU Project On Hacking In June 2000, while visiting Korea, I did a fun hack that clearly illustrates the original and true meaning of the word "hacker". I went to lunch with some GNU fans, and was sitting down to eat some tteokpaekki (*), when a waitress set down six chopsticks right in front of me. It occurred to me that perhaps these were meant for three people, but it was more amusing to imagine that I was supposed to use all six. I did not know any way to do that, so I realized that if I could come up with a way, it would be a hack. I started thinking. After a few seconds I had an idea. "

"Richard Stallman's personal site. https://stallman.org For current political commentary, see the daily political notes. RMS' Bio | The GNU Project On Hacking In June 2000, while visiting Korea, I did a fun hack that clearly illustrates the original and true meaning of the word "hacker". I went to lunch with some GNU fans, and was sitting down to eat some tteokpaekki (*), when a waitress set down six chopsticks right in front of me. It occurred to me that perhaps these were meant for three people, but it was more amusing to imagine that I was supposed to use all six. I did not know any way to do that, so I realized that if I could come up with a way, it would be a hack. I started thinking. After a few seconds I had an idea. "