20" competition trials bike, mulleted DH racing machine, full-squish slope-style dirtjumps, Japanese keirin, multi-week bikepacking, ITT, freeride.... Obviously

20" competition trials bike, mulleted DH racing machine, full-squish slope-style dirtjumps, Japanese keirin, multi-week bikepacking, ITT, freeride.... Obviously there is some overlap. Math, for most people, is the same a bicycles, for most people. With a handful of simple concepts, you can get by daily life.