I was just thinking about my evolution as a rower recently. When I first started, I could only think about and fix one thing at a time. (The catch, the finish, rowing hard, tapping down, handle height, etc.) Anything more and it all would come apart.
I have now evolved and can think of two things at the same time. During technical sessions this is great, as I can think of, say, both the catch and rotating my shoulders/body correctly. Unfortunately when it comes to race pieces or otherwise rowing hard, that uses up one of those two thoughts. That last thought is something I need to ration wisely in a regatta.
Perhaps one of these years I’ll evolve and be able to add in another thought. That would be nice.