Summary. As the following paragraph attests, slight letter misplacements in words of a paragraph don’t necessarily impede reading.
Aoccdrnig 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 toatl 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.
Based on the beginning and ending letters, the brain is able to process the collection of jumbled and mixed up letters words.
It’s possible that we not only read words as groups of letters regardless of their order, but we also express words as groups of letters regardless of their order when we type. This might explain why new keystroke data entry systems, such as on the Apple iPhone shown above, can account for the typing of mixed up letters in real-time. [click to enlarge image]
As these auto corrective systems are increasingly relied upon, we may reach the point where people find it difficult to type on a keyboard that requires letters be typed in the correct order.