I think I learned it in High School when I was cheating off the genius who sat behind me. I had to try all the stuff everyone is talking about…and it is official, I can read any way the words are set up. Mirror image upside down and backwards, sideways…writing is an altogether different story…I can not write left handed worth a damn, upside down looks like 3rd grade, but since my cursive looks like Arabic I can almost fake it…but I am the only one who can read it!