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.
The article also discusses some of the reasons for the increased prevalence of typos in more recent works, as well as their impact.
(via Library Stuff)