This is the Jocko Underground podcast number 78 sitting here with echo Charles EC. Let me Jocko only Kalandra's barometer. We're gonna talk about this. So this is an urban legend It's something that was written about by a guy named Alexander Calandra KalandraSomething like that. He was a he was a test designer someone that makes tests and He made tests for a living. And so he wrote this thing about how to ask good questions Versus bad ones, which led him to his urban legend.