I wrote this comment (http://programmers.stackexchange.com/questions/1785/what-should-every-programmer-know-about-programming/4079#4079 http://programmers.stack

I wrote this comment (http://programmers.stackexchange.com/questions/1785/what-should-every-programmer-know-about-programming/4079#4079 http://programmers.stackexchange.com/questions/1785/what-sho...). I have a lot more advice for systems developers (which can basically be summarized as "you're never as smart as you think you are -- plan for it") but I don't think they generalize as much to "all programmers."