People remember what they care about. Emotion helps retain short term memories - so if your attitude is wow, this is REALLY COOL! you will remember it for years - but if you think Is this going to be on the test? - you MIGHT remember it for the test.
You're kinda channeling me with this. I've worked manual labor with many academic duds as coworkers. When it came to sports many showed quite good mental ability. They liked sports so it just 'came to them.'
My brother is about as sharp a guy as they come - but is dyslexic - anything 2D and he isn't the sharpest - anything 3D and involving money - the guy is about as sharp as they come - RAZOR! He worked - now runs his own (SHARP) landscape and fountain company.