Derren Browns “the sacrifice”

SPOILER ALERT depending on where the comments go with this

I don’t want to give the whole thing away, but basically Derren Brown is the host of a show that takes a person through a series of conditioning exercises (best way I can describe it) to get them to believe a chip in their neck can influence their decision making and ultimately is testing whether or not that person would take a bullet for a random stranger. The scene is staged by actors and puts him in a situation where he has to decide to put himself in between a gun and the person they are intending to shoot to be a “hero”

I have a couple of questions:

1) do you believe this is right to put someone through a trauma like this? I know he must’ve signed a shit ton of papers... but still

2) it is said to be 100% real, though it is still television so I’m not completely sold on that. Do you think it’s real?