As a kid I had a thing about counting everything.. Tiles on the roof, number of metal bars on the front of the electric fire (I still remember it was 23 lol) and 6 divisions / cubby holes at the side of the fire. But not only that, I'd also play about with the numbers, like the ratio of tiles on one row to other rows, like thinking of a random number and seeing how quickly I could work out which cubby hole that number would land on if I went top left, top right, same on middle row and bottom row (which is obviously just X mod 6)... unless you do the rows/columns in a different order lol. I'm still fascinated with maths and mathematical constants (of which of course Pi is the most well known). My mum said I used to talk in my sleep, like playing chess with myself while asleep, mentally projecting complex design in progress circuit diagrams onto my bedroom curtains... and sometimes wake up next morning having somehow solved a design question in my sleep. Me and friends used to jump over the shadows of cars (while on the causeway) as they passed on our walk to school (not just jump, more a matter of the shadow not passing you while your feet were on the floor so instead of jumping you might lean on top of a wall etc)... I remember once doing it while I was walking alone, laughing at myself for feeling the need to it while alone (so not even playing the 'game' with mates), never did it again after that lol.. But I still hardly ever switch off, always thinking even in bed. If it's not work related it could be thinking about a design for a variable compression engine, methane powered gun, an electric circuit design, or might just be contemplating space/time, dark matter/energy, black holes etc lol.
