MIT is always full of tourists, and sometimes they ask for directions. Bruce is pretty used to this; he gives off enough Aura Of Student that he's asked pretty frequently for restaurant recommendations, T stop locations, and what have you. So when one guy with a long white beard asks for nice places for sightseeing, it isn't particularly memorable. He suggests the Harvard Bridge and the observatory on top of the Prudential Center and makes some crack about how if you can fly the view from the top of the Green Building is pretty awesome too. Then he wishes the guy the best and goes about the rest of his day.