Robert Arvanitis ← Feedback for Marginal Revolution University My feedback 1 result found How do we reconcile Ice-Age psychology (e.g. envy and spite to control IPD) with rational economics? 2 votes Vote Vote Vote Vote We're glad you're herePlease sign in to leave feedback Signed in as (Sign out) Close Close 1 vote 2 votes 3 votes Remove votes You have left! (?) (thinking…) 0 comments · Everyday Economics - Suggest a New Topic · Delete… · Admin → How important is this to you? Not at all You must login first! Important You must login first! Critical You must login first! We're glad you're herePlease sign in to leave feedback Signed in as (Sign out) Close Close Robert Arvanitis shared this idea · Apr 22, 2015