Fascinating book, Will.
I don't claim to be even close to understanding all of it (not even half of it if I'm being honest
) but having a lot of fun working my way through it for the second time.
On page 50, discussing the equilibration exercise you say
"As a point of reference, if both players were forced to check down on the river with the ranges we assigned, then Hero would win 82.5 BB on average and Villain 67.5 BB"
That would seem to imply that Hero has 55% equity
(0.55 x 150 BB final pot = 82.5 BB)
It's that figure of 55% I'm having trouble with.
When I put the two ranges into The Odds Oracle (and also when I put the ranges into PokerRanger, using a different method, so I'm not just copy-pasting) I get the 45 and 218 hand combos, agreeing with your combo counts, but I'm getting equity for Hero of 64.07%
Presumably I've screwed up somewhere, but before I dig deeper, could you kindly confirm that I've understood you correctly, and that Hero's equity should indeed be 55%?
Many Thanks.