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
Only in terms of other things No legislation could prevent the making of verbal pictures: God walks in the garden, He stretches out His arm, His voice shakes the cedars, His eyelids try the children of men. To forbid the making of pictures about God would be to forbid thinking about God at all, for man is so made that he has no way to think except in pictures. But continually, throughout the history of the Jewish-Christian Church, the voice of warning has been raised against the power of the picture-makers: “God is a spirit”, “without body, parts or passions”; He is pure being, “I AM THAT I AM”. The fact is, that all language about everything is analogical; we think in a series of metaphors. We can explain nothing in terms of itself, but only in terms of other things. Dorothy Sayers, The Mind of the Maker Metaphors We Live ByYou only understand something relative to something you already understand metaphoranalogy