Wiki helped define the category of social software. - Ward Cunningham

Traditionally, the cost of change curve said that if we detect the need for a change early, it costs less to make the change than if we detect the need late. I tackled that curve by saying, let's almost intentionally make mistakes so we can practice correcting them. That practice will help reduce the cost of making changes late.
Our feeling was that the limiting factor on any change was not when it was done, but how much thinking was required.

When people work code they can often see things I set out to do that they wouldn't notice otherwise. And there are no obligations to say, "Ward you're brilliant," but sometimes they say, "Ward you're brilliant." And that strokes my ego. Pride of ownership? You bet.

If you write a lot of programs, and you're used to squeezing them all the time, you find that it's easy to write a program that's simple. A lot of it is having a clear sense of what you want to say — writing the proof by choosing what to prove, and being clear about that. In programming, a lot of simplicity comes from knowing what matters and what doesn't matter.