> Put people in a room and ask them to push a button > It seems like the button is doing something, but actually it's not attached to anything > Ask people if

> Put people in a room and ask them to push a button > It seems like the button is doing something, but actually it's not attached to anything > Ask people if they felt like they had any effect on the world > Depressed people say "nothing I do matters", non-depressed people say "Well, I'm not sure, but there might be some effect, yeah" "DEPRESSED PEOPLE SEE THE WORLD MORE REALISTICALLY"