Avoid the word 'just' and be suspicious of those that use it: It's just a new model and a few pages, how hard could it be? It should take just a couple of weeks

Avoid the word 'just' and be suspicious of those that use it: It's just a new model and a few pages, how hard could it be? It should take just a couple of weeks. When people use this word they are being overly optimistic about something they're not sure of. It's harder than you think: The name of the game is to avoid fooling yourself and you're the easiest person to fool (that's from Feynman). If the problem seems hard it probably is harder than you think. Be ruthless and don't settle for unsatisfactory, hand-waving solutions to these problems. Most people can't detect deadlocks or temporal properties of concurrent programs in their heads.