And keep in mind that this post was just a wild hypothesis of mine that I based on a couple of things I read.

Well the difference between the coding and typing password is that (most of the time) the keys are hidden, and therefore even if you watch the screen while you type, you can't realy be sure whether you got one key wrong, even if you felt like you did.

But as a coder (as you mentioned) you are very familiar with the keyboard and where the keys are and such. So I don't think that is totally transferable here. I just think that you know your way around a keyboard and you have typed "red" so many times, and you know how your hands felt when you typed it that when you typed "trf" instead you knew by the hand placements (hand-eye coordination) that "red" was typed wrong.

On the other hand, if you didn't watch the screen or the keyboard, how can you know you typed "red" wrong the first time? So, it may be that you actually typed it correct two times.

The brain is very complex, and often small insecurities can mess things up, especially if one does these things many times, so it can be a fine line remembering and differentiating between all the different scenarios.

Although, interesting thought though :).

dam nice reply cantremember, just wanted to see your thoughts about that
as i told you when i write sometimes i feel when i got it wrong, and there is no feeling if i got something right
and thanks for the last line, english is not my native, so seeing the words
"although", "thought" and "though" is really useful