““Conformity comes into this, too: I sure would look like an idiot if I rushed to help and it turned out to be nothing. Our fear of embarrassment is the tip of the iceberg that is the ancient fear of exclusion, and it turns out to be astonishingly potent. We are more likely to intervene when we are the sole witness; once there are other witnesses, we become anxious about doing the right thing (whatever that is), about being seen and being judged by the group.””