I wonder how many of those 20 Watts has nothing to do with thinking but keeping us alive, alert to environment, noise and other signals etc. I wouldn't be sur

I wonder how many of those 20 Watts has nothing to do with thinking but keeping us alive, alert to environment, noise and other signals etc. I wouldn't be surprised if it is closer to 10 Watts vs 100 Megawatts. We are 10 million times more efficient.