I don’t know you, but I know all of you

If I walk up to a random person, I don’t know much about what they think or how they act. I likely wouldn’t be able to immediately determine who they voted for in the last election, what their favorite color is, or which baseball team they root hardest for.

However, if I was in a room with 100 random people, I could do a lot better on my guessing. Around 50 people would have voted for Joe Biden…