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
All the things we want to do This is precisely where “burglary” becomes a myth, a symbol, a metaphor: it stands in for all the things people really want to do with the built environment, what they really want to do to sidestep the obstacles of their lives. Geoff Manaugh, A Burglar's Guide to the City Rage rooms urbanismlife