About a third of the way in, and it's extremely good so far. It is long, but it's more of a page-turner than most history books.

Some takeaways so far:

• Wow, my California education did not talk about the genocide and ecological devastation involved in the gold rush. It's astonishingly bad.
• In principle I know how into race science everyone was in the 19th and 20th centuries but it still takes me by surprise when I read the actual things they wrote and said