[frankwiles]

When I started at the Lawrence Journal-World (the company who Open Sourced Django) I was forced to watch a really old cheesy video about Lock-Out Tag-Out which at the seemed stupid for a web developer. Then I was walked to the office past some of the biggest machines I’d ever been near to that point in my life. Then I got it.

It definitely saved a few peoples limbs at that company alone.

[Cthulhu_]

In software development the closest equivalent I can think of would be locking files in older version control systems like SVN.