How to Internalize the Lessons From Other People

Brazilian Jiu Jitsu fighter says he works on "firewalking" to internalize lessons from other people's experiences with the same physiological intensities I can learn from my own. If you look at someone get armbarred, you're going to notice you got armbarrer, right? So if you can learn to observe other people's technical errors and visualize yourself in that position,. then you can learn from thousands of experiences that you haven't had as deeply as you can learning from your own.