> b) it's hard to judge what's possible or not without experimental data (on otherworldly civilizations), nor we're even explained the mechanisms of "us teachin

> b) it's hard to judge what's possible or not without experimental data (on otherworldly civilizations), nor we're even explained the mechanisms of "us teaching others". But it's a schematic way of showing Great Filters in a simplified, gamified manner - and that's still a possible, valid and argued for answer to a Fermi Question Exactly, the whole discussion is already extrapolation for sample of 1. Who knows how civilization would develop if we were more like bonobos less like chimpanzees.