My family has lost an excellent bread recipe as a result! Growing up, my mother always helped my grandmother in the kitchen. My grandmother was a fair cook, but she could (according to legend) make the best bread. She never permitted her children to make the bread - they just didn't "have the knack." Their loaves weren't as good as hers. So when she passed, so too did the recipe. But that's garbage! They weren't missing some magic knack, they were children who had never made bread before.
There is no magic. It's hard work all the way down.
I'd like to see research done on the teaching methods of entity theorists versus incremental theorists. I bet Incrementalists are more willing teachers!