In the first video he adjusted the valves with the valve cover off and the engine running ... did this madman simulate movement of the valves, cam, pistons, etc

In the first video he adjusted the valves with the valve cover off and the engine running ... did this madman simulate movement of the valves, cam, pistons, etc? To do it at the granularity needed to make that valve adjustment an organically arising need would be too computationally intensive I think. But how far did he go? Doesn't matter - this guy is great.