I just pledged! My 67 year old mother got me Turing Tumble for Christmas and we worked through the first half of the puzzle book together. It was so nice to b

I just pledged! My 67 year old mother got me Turing Tumble for Christmas and we worked through the first half of the puzzle book together. It was so nice to be able to explain to her what I do for a living with actual physical switches and marbles. I recommend it to everyone and anyone who will listen.