The following is supposedly a true story.
An economist was about to give a presentation in Washington， DC on the problems with Black-Scholes model of option pricing and was expecting no more than a dozen of government officials attending.
To his amazement， when he arrived， the room was packed with edgy， tough-looking guys in shades. Still， after five or so minutes into the presentation all of them stood up and left without a word.
The economist found out only later that his secretary ran the presentation through a spell-checker and what was “The Problem with Black-Scholes” became “The Problem with Black Schools”。