“Black-Scholes is a know-nothing system. If you know nothing about value - only price - then Black-Scholes is a pretty good guess at what a 90-day option might be worth. But the minute you get into longer periods of time, it's crazy to get into Black-Scholes. For example, at Costco we issued stock options with strike prices of $30 and $60, and Black-Scholes valued the $60 ones higher. This is insane.”
![“They [Mc Donalds] take people and give them a first…” quote by Charlie Munger](https://sms4smile.com/quotes/img-quotes/a55/charlie-munger-458_be-good_they-mc-donalds-take-people-and-give-the_41809.jpg)
