What is Entropy?

I wrote a little book about entropy; here’s the current draft:

• What is Entropy?

If you see mistakes in it, please let me know!

An alternative title would be 91 Tweets on Entropy, but people convinced me that title wouldn’t age well: in decade or two few people may remember what ‘tweets’ were.

Here is the foreword, which explains the basic idea.

Foreword

Once there was a thing called Twitter, where people exchanged short messages called ‘tweets’. While it had its flaws, I came to like it an...