Here's a link to some photos of Calca 1!

[https://imgur.com/a/plCRC5s](https://imgur.com/a/plCRC5s)

I've reread this calca a couple times, but I'm struggling to understand why cutting the 2x2 piece in half diagonally is more precise than cutting it vertically or horizontally in half. Can anybody help me understand this?

Rereading Anathem again. Can someone post the diagrams for Calca 1? Also interested in hearing people's thoughts on the significance of the Calca - both the immediate math points and second and third order ramifications (including the idea that the idea of knowing we don't know something being a central part of the concept of maths).

Thanks!