They were testing if the block held when presenting different scenarios to Gemma to induce emotional reactions. Their goal is to produce humans who are always in control of their emotional side. From a psychological perspective, the oldest parts of our brain react to the environment, fear, anger etc. that reaction can be strong and most times overwhelms the thinking, Rational portions of our brains. I think Lumon is trying to “sever” those parts of a brain so the person will be docile, and, ultimately controllable.
Other observations: awesome that Gwendolyn Christie beat the crap out of another guy (see GOT). Also did you notice the pregnant fireplace statues (one of them was Kier). The animatronic Kier was creepy. His consciousness is in that friggin robot, especially how he humiliated Milchick. Next season may be the revolt of the innies led by Milchick.
https://www.tvinsider.com/wp-conten...season-2-finale-pregnant-statues-1014x571.jpg