Difficulty with O8 concept from Zee's book

[QuickLearner]

I agree with your reasoning and have two small points to add. Zee says right up front that he will have us playing more hands than we expect (and we should tighten up some when learning); also, LP allows us to see how many are in the hand with us. I many times will play 23 if there are only a couple of callers in ahead of me. The chances of having an ace still in the deck are much greater.

24JJ is still too much of a gamble for me. I'm just not there yet.