> I'm not disagreeing, with regards to the
> entire bankroll for your session. You are
> making it less likely to completely ruin if
> you never play to the point of ruin.

Yes, but I don't play to the point of ruin only in these cases where I know my ROR for the remainder of the session is too high.
Let me put it in another way: First let's focus on your session-BR. Say also that you decide to keep your sessions short (1 hour).
So you grab $X and face to the casino. Doesn't matter the rules for the moment.
Would you go with 1 unit? 2 units? maybe 6?
Probably the answer to these questions is NO. Why? Because it's suicidal. Your ROR is very high and you'll probably come out as a net loser.
The smart thing to do here before facing to the casino is to take more money in order to avoid situations like these. How much money? All your BR? Half your BR?
Now you calculate that taking 30 units would be safer (Session-ROR = 10%) and decide to assume that risk. It's obvious that if you take all your money you won't have to worry about this problem.
Now, we all hope to start winning but if after half an hour of play you're down to 6 units; Would you now play? I know that playing those 6 units were part of the original 10% which you already accepted but ... isn't it better not to play in these situations? Isn't it similar to the situation I mentioned above?

> What I was suggesting though is that since
> you're not playing those last chips - your
> actually in effect running into ruin for a
> smaller trip bankroll. Just because you have
> the extra units with you doesn't mean they
> count towards your trip bankroll if you
> don't use them.

Yes, probably the effect is the one you mention.

> How? Does saving those chips on this trip
> mean you won't lose them in the long run?
> Does it change you'r overall EV? To take it
> to the extreme as you did, it's the same old
> argument, if you were playing a game with an
> ev of -1e-100, and you saved those extra
> units by stopping early - would your ev then
> become positive?

Forget about the long run for the moment. We are talking about a session and how to make it worthwhile. If we think in terms of long run then why not go to the casino with 1 unit (or 6) and place them only when we have the edge? Why use trip-ruin calculations after all?

> No you can't, but your ev for that 1 chip
> was still positive. I did mention btw that I
> would consider not playing with less than 6
> units so I would be able to take advantage
> of spliiting and DAS. So my effective
> bankroll would be 6 units less.

Your effective BR would be 6 units less but even with 7 units I wouldn't start a fresh shoe. Time to go and replenish my session-BR.

> That's more a matter of the ability of the
> sim and not the true math.

I think I have a point but it's hard to be accepted without showing the numbers

> I do, but I still respectfully disagree.

You're welcome to disagree any time you want.

Sincerely,
Cac