Accordnig to rscheearch at Cmabrigde Uinervtisy, it deosn't mttaer in waht oredr the ltteers
in a wrod are, the olny iprmoetnt tihng is taht the frist and lsat ltteer be at the rghit pclae.
The rset can be a total mses and you can  sitll raed it wouthit a porbelm.
Tihs is bcusease the huamn deos not raed ervey lteter by istlef, but the wrod as a wlohe.
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PS;When I first look at it, I thought I cannot
     read it, but it's true the mind can get it
     automaticaly.It's a good reading test.