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
21. Four-Story Limit Problem There is abundant evidence to show that high buildings make people crazy. Solution In any urban area, no matter how dense, keep the majority of buildings four stories high or less. It is possible that certain buildings should exceed this limit, but they should never be buildings for human habitation. Christopher Alexander, Murray Silverstein & Sara Ishikawa, A Pattern Language In every skyscraperIt begins with a trip down the stairsLow wooden silhouettesSkyscrapers are frowned upon citiesurbanismhome