> "Sorry, that explanation is just plain wrong." I'm pretty sure I saw the same in my freshman econ textbook, long ago. Tyler Cowen also speaks of selling sli

> "Sorry, that explanation is just plain wrong." I'm pretty sure I saw the same in my freshman econ textbook, long ago. Tyler Cowen also speaks of selling slightly different versions of a product in the MRU video on price discrimination: https://mru.org/courses/principles-economics-microeconomics/price-discrimination-examples-airlines-arbitrage https://mru.org/courses/principles-economics-microeconomics/... Looks like Wikipedia's article also states the same: https://en.wikipedia.org/wiki/Price_discrimination https://en.wikipedia.org/wiki/Price_discrimination