Mark's Friend Comments

I have spent a harrowing week correcting crowdsourced typos in Smart Spacetime. It's so hard to get reviewers and copy editors for my material, but with some excellent help a new version has been upoaded. Kindle updates are free -- paper updates can be ordered, and I'll try to get a coupon code as a thank you to early buyers.

Physics is largely about understanding processes by counting things. Newton's laws provide an ingenious recipe for generating stories about processes on a certain scale, using a construction that counts beans called "energy". Could we use a similar approach in other disciplines?