> If I tell you how I ran a marathon, you could shout "survivorship bias!" But that fact still stands that I hadn't successfully run a marathon before I did tho

> If I tell you how I ran a marathon, you could shout "survivorship bias!" But that fact still stands that I hadn't successfully run a marathon before I did those things. Well, yeah, the whole point is that we don't know how many people did those same things and then failed to complete a marathon.