Earlier today I learned that iPhone’s internal dictionary corrects typos of “shit” and “fuck”. I’m guessing there are two reasons for this. 1) Steve Jobs swears, and probably swears in his written correspondence, and no spell checker is going to give him a damn red squiggly underline when he’s using perfectly good curse words. 2) Apple assumes its users are adults, and if they want to swear, they’re not going to make the user feel needlessly uncouth by claiming their perfectly good words are “misspelled.”
(Mac OS X also recognizes “shit” and “fuck”.)
It seems like a small thing, but it’s an important detail in the design. Nearly every other computer system refuses to recognize curse words, and, in effect, condescend to their users. Apple, by recognizing the reality of English discourse, exhibits respect for their customers.