Chidi: No offense, but solipsism, as a philosophy, is pretty juvenile, especially for a person with multiple advanced degrees. And it's also impossible to refute, because everything you see is confirmed by your belief. However... [Chidi sticks his finger in Simone's frozen yogurt]
Simone: Dude!
Chidi: What? If none of this is real, then it really shouldn't matter, right? In fact... [Chidi boops her on the nose with his yogurty finger]
Simone: Dude!
Chidi: What? It's not real. None of this matters. Leave that on your nose for the rest of time.
Simone: Fine. Point sort of taken.
Chidi: You know, in a larger sense, if you go around acting like no one else matters, then you end up doing things like knocking over cakes, and pushing people into pools and just generally acting like a jerk. Why not treat them better, just in case they're real? I mean, what do you have to lose by treating people with kindness and respect?
Simone: Okay. Keep talking, probably-fake but-maybe-real philosopher man.