>>14039854the thing about these numbers is that they're somewhat misleading because of the way the brain creates complex initial logical structures which later on become economized for efficiency. so even if the chart says an 18 year old's brain is more massive than a 70 year old's, the septuagenarian grey matter is vastly more efficient and well oiled, and the boomer is much, much more intelligent than the zoomer regardless the slight discrepancy in brain size.