Why can people touch high voltage?

Question

So I know that you need a certain current flowing through you to die, I've heard from some people "its the amps that kills you", and from others "Its the volts that drive the amps" and I realize that these are true according to ohms law v=ir or i=v/r.

But I was watching this video: https://www.youtube.com/watch?v=ubZuSZYVBng

A guy touches a constant 200kv and i've seen a similar experiment in real life, assuming that his body has 100Kohm of resistance which is generous, thats 2 amps flowing through his body if you use ohms law, and realistically way more as there would be less resistance and it would decrease after it makes a circuit. How is this possible without him dying?

Answer 1

A Van de Graff generator can only deliver microamperes of current continuously, so the voltage was no longer 200kV or whatever after he touched it. It was probably less than 1 volt.

If you want to look at it more technically, the generator is like a constant current source of something like 10-50uA (wild guess) feeding into a capacitor and some leakage to ground (corona discharge) that occurs at high voltage. Discharging the capacitor of (the hemisphere at the top has some capacitance) and you're left with just the microamps of current, which is not remotely enough to be dangerous.

^{simulate this circuit – Schematic created using CircuitLab}