I’ll start with straightforward typos, where it’s getting the fingers to hit the intended keys that’s at issue, and then work out from there. From Greg Morrow on Facebook earlier today (exchanges lightly edited):
GM: My Dad’s got the 9-inch double-serrated Wüsthof bread knife and it is sweet. I don’t cover it exactly, I just want one exactly like it.
AZ > GM: Entirely beside your point, but I don’t cover it exactly is a beautiful example of a keyboard typo: cover for covet because R is next to T.