A user interface is well-designed when the program behaves exactly how the user thought it would.
Joel SpolskyI've been using Vista on my home laptop since it shipped, and can say with some conviction that nobody should be using it as their primary operating system - it simply has no redeeming merits to overcome the compatibility headaches it causes.
Joel SpolskyWriting code is not production, it's not always craftsmanship though it can be, it's design.
Joel SpolskyThere's a subtle reason that programmers always want to throw away the code and start over. The reason is that they think the old code is a mess. [...] The reason that they think the old code is a mess is because of a cardinal, fundamental law of programming: It's harder to read code than to write it.
Joel Spolsky