Well I'm just an old town doctor. I did my training in some god-forsaken tropical country. But the fact that our brain can't tolerate even a few seconds of arterial pressure drop seems like proof enough of the fact that it doesn't really have much of a functional reserve... in my south-american country they teach this shit in school. I'm not really aware of the reach of SteemStem but it seems more like Steempopularscience or steem general culture...