Backwards...

Have you ever sat opposite someone as they read a magazine? How much time do you spend trying to read the article they're reading, or at least the headlines?

Leonardo da Vinci wrote in mirror writing and there are many competing theories relating to this, that he was left handed and didn't want the ink to be smudged by his hand as he wrote, that he wanted to hide his notes and ideas from theft but another suggests it could be because he was dyslexic. In fact this is their reason that da Vinci may have been dyslexic, as mirror writing is a rare symptom of dyslexia.