This is something I often think about whenever public polls are conducted, or anything else that involves many people. For example, tomorrow there is a rally to oppose our government and I'm thinking if I should go. If 100,000 people show up, would it make a difference if I came? Usually the answer is "But what if all of those people thought like you", but I don't accept that as a real answer, because I fail to see how me going or not going can possibly influence those 100,000 other people. Every person will either come or not, but no one will think "Hmm, is Chen coming? Because if he isn't, I ain't going either!".