Your brain is hard wired in such a way as to recognise potential matches to familiar objects, this is how optical illusions work.....

But did yiu konw taht aoccdrnig to rscheearch at an Elingsh
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 is in the rghit pclae. The rset can be a toatl mses and you can sitll raed it wouthit a porbelm. Tihs is bcuseae we do not raed ervey lteter by itslef but the wrod as a wlohe. Cool eh?