Bad spellers are a breed apart from good ones. A writer with a mind that doesn’t register how words are spelled tends to see through the words he encounters — straight to the things, characters, ideas, images and emotions they conjure. A good speller, by contrast — the kind who never fails to clock the idiosyncratic orthography of “algorithm” or “Albert Pujols” — tends to see language as a system. Good spellers are often drawn to poetry and wordplay, while bad spellers, for whom language is a conduit and not an end in itself, can excel at representation and reportage.
What Typos Mean to Book Publishing - NYTimes.com