I'm on the other side of your discovery. When my kids were young and in karate, I couldn't understand why they were having so much trouble acting out techniques in the air. In my mind, I could see where the imaginary opponent was and how they would move, but most of the kids had a lot of trouble with that.

While talking to my wife, I found out that not everyone can envision people and things in 3D.

I was also the parent who made the kids' Halloween costumes. My sewing technique is pretty terrible, but I can see how the costume should look, and I can take it apart in my head and see what shape the pieces should be.