It got me.

[CaliHwyPatrol]

 

[agarwalro]

The truth of my situation was jumping out .

Amazing what tricks the brain plays. It has to do with pattern recognition in humans, called, "word shape". Here is a good writeup on the concept.

Aoccdrnig to a rscheearch at an Elingsh uinervtisy, it deosn't mttaer in waht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht frist and lsat ltteer is at the rghit pclae. The rset can be a toatl mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae we do not raed ervey lteter by it slef but the wrod as a wlohe. ceehiro.

 

[mtrycrafts]

...
Amazing what tricks the brain plays. ...

Yep. Not only reading but listening as well. Yet, some/many/all golden eared audiophiles just cannot accept that they have been tricked.

 

[zhimbo]

It has to do with pattern recognition in humans, called, "word shape".

It isn't JUST that, though, as that doesn't really explain the second error at all. In general, it shows the importance of "top-down" processing - that perception is driven strongly by biases, expectations, and prior experience, and isn't just "bottom-up" - driven by the current stimulus.

P.S. This is is why proofreading - especially something you've written yourself - is so hard. You just "make it right" without noticing.

 

[j_garcia]

It is that we learn to recognize those patterns, so the brain "expects" them to be correct. The initial glance processes what it expects and interprets it the way we initially read it, so it takes a longer look to really see what is going on.