How fast do you learn the mechanics of something, be it a game, equation or task.
Me? I analyze everything, takes about 30 seconds in a game, grab something with the best stats IMO, establish movement, weakness and strengths with what I have.
Equation, look at it, see an example, figure it out. 45 seconds.
Task, I look at it, establish what's wrong, fix it. Varies from instantly to a day.