I think zero is WAY harder conceptually than plus, although that's pretty great too!! Wow.

A few weeks back my ds9 had a little disagreement with an older friend, and then later Dh about whether infinity times 0 is zero or not. Ds held firm that there was no answer, despite my DH explaining several different ways about how nothing of anything is nothing, therefore zero.
I had to look it up, I wasn't sure...turns out there is no answer, infinity just doesn't work that way. I was surprised, especially about how ds stuck to his guns.
Doesn't equate to genius either, but certainly interesting!