Also, one might not understand if the things someone else is doing, is mediocre or really bright, when one doesn't understand the topic well, oneself. Let's sa

Also, one might not understand if the things someone else is doing, is mediocre or really bright, when one doesn't understand the topic well, oneself. Let's say someone X cannot understand much mathematics -- then, if someone else, person Q, solves a quadratic equation, and person F solves, say, Fermat's Last Theorem, then, it's not easy for X to know that F is extraordinarily talented (right?) whilst Q is more likely an ordinary person. Because to X both problems are equally hard -- namely impossibly hard. Instead, like @dcolkitt indicated, X will look at how Q and F dress (better looking = better at mathematics), and which one has the most self confident voice? (However in things like sports, when one clearly sees who, say, is the fastest runner, then it's simpler of course.)