If I’m not mistaken, brain size has little to do with actual intelligence anyway. It is a secondary factor. The fact is that most people don’t use the vast majority of their brain, so a person with a smaller brain, but who is more active intellectually, will be smarter than someone with a larger brain who refuses to think.
“The fact is that most people don’t use the vast majority of their brain,”
That is an oft quoted myth. Not true. (Well maybe true for liberals but I digress)
I do believe the rest of your post was spot on, though.