117: Cost/benefit of displays, directing esteem cues, evo psych of economics, internet trolls, and

Summary: Q1:  What makes certain people do more for others than they would for themselves? Q2: What's the scoop on altruism? Q3: What's wrong with socialism? Q4: Why do internet trolls say mean/harsh thing online? One caller has a question about her special needs son.  Second caller has a question about identity politics in 2018.