If I understand correctly, Peterson is defining “acts” and “risky acts” as completely separate things (functions from states to outcomes, and lotteries over outcomes, respectively). If that’s true, it clears up the confusion, but that seems like extraordinarily bad terminology.
Okay, well I’ve rewritten this for the next update in a way that hopefully resolves the issues.
If you have time, once the update is posted I’d love to know whether you think the rewrite is successful. In any case, thanks for taking the time to comment so far.