Designer, implementor, user, writer A Fragment by Donald Knuth dl.acm.org Thus, I came to the conclusion that the designer of a new system must not only be the implementor and the first large-scale user; the designer should also write the first user manual. The separation of any of these four components would have hurt TeX significantly. If I had not participated fully in all these activities, literally hundreds of improvements would never have been made, because I would never have thought of them or perceived why they were important. Eating your own dog food making
The palette of nature "What nature does with its colors is invariably—the palette of nature is twice as complicated, at least twice as sophisticated, as anything any artist can ever come up with. On a couple levels. To start with, there are these amazing combinations of colors, filled with surprises and almost never wrong. I don't know how Nature ever conceived to put, say, those together. But, boy, are they right on the money!" Lawrence Wechler & Robert Irwin, Seeing Is Forgetting the Name of the Thing One Sees Colors in natureHues subdued naturecolor