So, you want to look like Rain Man? (I mean in a positive way 🙂 ) A real mental computer? Learn how to tell from any date which day of week it fell on – in just a few seconds. Without a mobile phone, paper, or any other calendar. Sounds cool, right?
Well, if you are interested in this skill, I made a tutorial, and a trainer app wchich can be used for free for all my subscribers.
