Question

Why do people have misspell in words

Answer 1

It turns out that misspelling in the brain (if it's not being influenced by some kind of learning disorder, like dyslexia, which is another matter entirely) is a multi-layered problem involving diverse areas of brain tissue and multiple processes. Spelling, neurologically, isn't as simple as rummaging in a brain-bin, finding a word, and reproducing it perfectly on paper. There are many stages where things can go slightly awry, and new science means we can pinpoint exactly where in the brain various processes are going wrong. Not much of a comfort when you've misspelt the main word in the title of your Powerpoint presentation, but there it is.