07 Markov does it in chains. Real analysts do it almost everywhere. Statisticians probably do it. 0A Quantum physicists can either know how fast they do it, or where they do it, but not both. 0B Logicians do it by choice.
Computer scientists do it depth-first.
0D Fermat tried to do it in the margin, but couldn't fit it in. 0E Aerodynamicists do it in drag. G Group theorists do it with The Monster. Pure mathematicians do it rigourously. C programmers do it with long pointers.