"I dn'ot gvie a dman for a man who can olny selpl a wrod one way." This quote from the great American author Mark Twain illustrates an interesting aspect of how our brains comprehend written language. The poster goes on to explain how people read words rather than letters, and how spelling can have almost no effect on our reading comprehension. Try to read the misspelled poster aloud at a normal reading speed. You'll find that it's quite easy, and amusing!