[Manishearth]

I came across that mistake (and it was pretty obviously a mistake to me, but that's because I already know quite a bit about the RH), and later was stonewalled by a different mistake -- the "Plot of the real and imaginary part of the Riemann zeta function ζ(s) in the interval -5 < Re < 2, 0 < Im < 60" plot is mislabeled; it's actually a contour graph of the condition "ζ(s) = 0" on the complex plane with real and imaginary parts plotted separately.

The problem for me is that my way of reading math stuff is to assume that whatever is said is being true and fit it into a growing mental model as I read. Many other students I know do that. Once you get into the flow of it this can get pretty fast without losing out on comprehension. When you come across mistakes, it leads to a speed bump, and you have to stop and re-collect your thoughts after this. This only happens to me for math and physics, not other kinds of technical writing, but it happens.

This doesn't turn me off an article, it's just super annoying.

Typos and stuff are fine, it's the "plausibly true" stuff that gets you. I suggest spending more time proofreading but not worrying more about it.