Thanks. BTW, I found there's a much cheaper ($80 -> $27) paperback version published a few days ago.
Can you share the link?
I just searched amazon for the title plus "paperback". Now that I look at it again, it says "by MAN (Author)" whereas the hard cover is "by Richard McElreath (Author)", so it's looking possibly scammy to me now, so caveat emptor...
I received the book today. I'm still not sure that it isn't a scam... The back cover is empty; otherwise, the quality is fine. I don't know if this is associated with Richard McElreath. Good luck to everyone.
MIT 6.041[1] is a very good course I can recommend. Not sure if MITx 6.431x on edx is the same, but it's the same teacher in any case.