Ability: Coordinate system rotation. I can move 3d objects around in my mind with ease and it is clear in group settings that most people are not good at this.
Knowledge: heat transfer. I've done years of theoretical study and more years of practical application of heat transfer.
I can't picture things in my head almost at all. I used to think I was mind blind, but I'm not entirely it seems, it's just that my ability to visualize things is paper thin. It takes enormous effort to visualize almost anything and even then it kinda just proofs, no actual rotation with information, just the idea of rotation. Can picture a tree, but I can get information from it.
Kids should have access to CAD early in life. I grew up with it and mentally picturing, moving, and manipulating 3D objects in my mind is just second nature. I can even keep track of orientation (Front, Back, Left, Right, Top, Bottom views) with minimal effort.