Last week I was listening to a podcast on Hanselminutes, with Robert Martin talking about the SOLID principles... They all sounded to me like extremely bureaucratic programming that came from the mind of somebody that has not written a lot of code, frankly.
Joel SpolskySoftware development takes immense intellectual effort. Even the best programmers can rarely sustain that level of effort for more than a few hours a day. Beyond that, they need to rest their brains a bit, which is why they always seem to be surfing the Internet or playing games when you barge in on them.
Joel Spolsky