Funny related story: For an internship, I worked on a app that would show your sleep data in a nice visualization (this was for a smartwatch). I implemented a

Funny related story: For an internship, I worked on a app that would show your sleep data in a nice visualization (this was for a smartwatch). I implemented a basic version, and used it for a few weeks. It seemed to work fine for me, so I released a beta version for others in the company to dog food. Within a day, I got a bug report from a coworker that it rendered incorrectly for them. I was pretty surprised, since I had been using it for a long enough that I would have expected to encounter all the edge cases. I dug into the code, and realized that this bug only happened if you went to sleep before midnight, which I never did...