When Bats Attack: Understanding Insurance

Send us Fan MailMike Munger explores insurance economics through the lens of transaction costs and risk management, culminating in an amusing case study about "bat-in-mouth disease."Insurance transfers risk from individuals to larger pools, reducing the expected variance of outcomesThe fair price of insurance equals expected value (probability × potential loss) plus transaction costsInformation asymmetry, subjective risk valuation, and strategic behavior complicate insurance marketsInsurance faces two major challenges: adverse selection (who buys insurance) and moral hazard (behavior changes after getting insurance)Deductibles and co-pays help align incentives between insurers and insuredInsurance history dates back 5,000 years to ancient China, Mesopotamia, Greece, and RomeThe "bat-in-mouth disease" case study shows what happens when someone tries to purchase insurance after an incidentTransaction costs explain why dogs sometimes stop climbing stairs and why freezing credit cards--ie, transaction costs--might prevent impulse spending. The piano player in a brothel story, and its history.The book o'da'month is Daniel Flynn, The Man Who Invented Conservatism. Bat in mouth story:  https://www.nbcnews.com/news/us-news/bat-flies-womans-mouth-arizona-costing-nearly-21000-medical-bills-rcna222463Some background on insurance:Kenneth Arrow on the Uncertainty & Welfare Economics of Medical CareAnja Shortland on Kidnap: Inside the Ransom Business"Piano player in a brothel" story origins:https://www.goodreads.com/quotes/93559-my-choice-early-in-life-was-either-to-be-ahttps://barrypopik.com/blog/dont_tell_my_mother_im_a_banker_she_thinks_i_play_piano_in_a_whorehouse Daniel Flynn book:  The Man Who Invented ConservatismIf you have questions or comments, or want to suggest a future topic, email the show at [email protected] !You can follow Mike Munger on Twitter at @mungowitz