Rails, iOS developer. I build data viz tool https://vida.io.
Holiday traveling is exhausting, especially with small children. I’ve practiced mediation for a while. It seems too simple and boring at times. You don’t know whether this thing really works. Yesterday, I got some enlightenment while in the air.
Why -1 x -1 = 1?
I recently had to explain to my daughter negative multiplication. I had a way to help her visualize multiplication. I thought it can be applied to all multiplications. But I stumbled upon -1 x -1 and had no way to explain why…
Why does gold have value? Why does money have value? Is bitcoin real?