Brain Food or Brain Pain?

A friend posted the following paragraph online the other day.  We swiped it from him (thanks Paul Lockhart) and thought we'd post it here to let everyone give it a shot.  Maybe you've read it before, maybe you haven't. Either way we thought it was very cool and it's remarkably easy.

Here it is:

Aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it dseno't mtaetr in waht oerdr the ltteres in a wrod are, the olny iproamtnt tihng is taht the frsit and lsat ltteer be in the rghit pclae. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe. Less tahn fvie percnet of pepole can't raed tlhs.

Petrty ubneiabevle dno't you tinhk?