A Rebuy ? for Math Majors

[M.B.E.]

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Well i said that you have to ignore time. EV is unrelated to time spent. So you're not 'throwing away' $8, you're just going to put the $10 to a better use.

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But why are you so concerned with "the" $10?

If we are talking about the last $10 in your bankroll, then what you say will make some sense: put it where the EV is highest. But if we are sufficiently bankrolled, then we can spend the $10 on a rebuy today (which is worth $8 of EV) and if we lose that, still spend $10 on tomorrow's tournament (which is worth $10 of EV I think, I forget the numbers in your example).

The point is, this is not an either/or situation. You can do both. If you pass up rebuying today, then you are throwing away $8 of EV (compared to rebuying today, and also entering tomorrow's tournament).

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Think of it as you're playing two seperate tournaments, instead of one and double rebuying.

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But it isn't two separate tournaments.

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and, like i said to the other guy.. roi and EV are the same. They both measure your value.

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DWarrior gives a good explanation of why you are wrong on this point.