I love the "Falsehoods programmers believe about X" articles. They are basically ready-made failure test cases. Whenever a junior co-worker would say something like "I know! I'll just write our own date and time handling code." I'd point him at [1], let him stew on that for an hour or so, and then, sure enough, go back and lo and behold he's convinced to just use a ready-made third party library instead.

1: http://infiniteundo.com/post/25326999628/falsehoods-programm...