Very well stated Jason. I think your opinion on "Pretending your faults don't exist" is especially spot on. Programmers, myself included, can sometimes become so attached to a feature or coding approach that any criticism, warranted or not, becomes a personal attack. I also think it has become way to acceptable to say "no" to customers. Rather than the constructive reasoning behind saying no, often times arrogance or even self consciousness leads to pretending faults do not exist. For this reason it is always helpful to have a trusted source for non-programmer feedback.