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
This small internal quaver Pay attention now: No matter how much you know or learn about syntax, grammar, or rhetoric, This small internal quaver, this inner disturbance, Is the most useful evidence you'll ever get. Someday, you'll be able to articulate what causes it. But for now, what's important is to notice it. Noticing is always the goal. ...the faint vertigo caused by an ambiguity you can't quite detect. What matter is what it points to. Find out what's causing it and fix it Even if you're not sure how. Verlyn Klinkenborg, Several Short Sentences About Writing Notes on the Synthesis of Form attention