The profitablity of a bluff

[Shandrax]

All nice and smooth, but this line here is the one I have a problem with.

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FE = The percentage of the time you guess all opponents will fold to your bluff

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Why try to make precise math if you don't know what you are talking about? If you start guessing at what percentage all opponents might fold (/random 0 100), why not try another shortcut and just guess if the whole play might work or not?

By just going "yay" or "nay" you save yourself a lot of calculations.