The experiment is pretty simple: you have two groups, the Red one and the Blue one. Both are separated and live in constant paranoia because the “others” could do something.
What a bullshit experiment, right?
It’s a metaphor.
Doesn’t this remind you of the state the world was in before the Great War? Two groups that are divided by an ocean and different believes living in constant paranoia and worsening in by their own actions.
The RED ones. The Communists.
The BLUE ones: the States of America that choose the DEMOCRATIC party during elections are called the Blue States.