Originally Posted by
Michael Wolf
When it comes to lifting, you can (theoretically) completely and entirely master every aspect of performing and coaching the squat, but still only be able to squat 135 lbs. We know enough about human physiology to know that this would never actually occur with a healthy young male, but the point is that you can master everything there is to know about it, but not be very strong. We have enough experience with the broad range of genetic potentials to know that even men who are quite disadvantaged in that department but otherwise healthy (and not seniors) can get their squat up into the 300s with time and hard work. Someone like that may in fact become a good coach if he sticks with it long enough and works with a broad enough population to know that he's on the short end of the genetic stick and to expect more from most people.
This analogy doesn't exactly hold true with every other discipline. You can't master rocket science but not be very good at it. It's not a perfect analogy. You can, however, have two people who have mastered it but one struggled mightily to do so while the other breezed through it as a natural. You might rather have the second one working at NASA, I don't know, but you almost certainly would rather have the first one teaching it to a group of students, most of whom will not have the natural aptitude of the second guy.