itnersetnig

Tihs is apaperlnty a wlel-kwnon ltlite tinhg taht gtes fwoarderd a lot, but taody's the fsrit tmie I saw it:

THE PHAONMNEAL PWEOR OF THE HMUAN MNID
Aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it deosn't mttaer inwaht oredr the ltteers in a wrod are; the olny iprmoatnt tihng is taht the frist and lsat ltteer be in the rghit pclae. The rset can be a taotl mses and you can sitll raed it wouthit a porbelm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe. Amzanig huh? Yaeh and I awlyas thought slpeling was ipmorantt!

A friend's retort:

Crartnoy to the duoibus cmials of the puoivers eiaml, a slpmie ioisrevnn of ianretnl cretcarahs oetfn csufenos msot rredaes. I slitl tnihk taht it is naet tguohh.