Here is something I have been thinking about lately, and I don't understand it.

So, Ive been learning a bit about pot odds, +EV, and the like, etc. And I got to thinking:
Lets say you play every flush draw like the following. You will call a bet every time it gives you 4.1 odds or better. Now, doesn't that 4.1 imply that calling with exactly 4.1:1 gives you neutral EV over time? Thats what I don't understand. If I call with 4.1:1 odds, aren't I basically making 0 profit off every flush draw I have, over time?

thanks for the help!

If you are getting even odds to call w/ the flush draw and they never put any more money in the pot when you hit your flush I suppose it would be neutral. But sometimes they will put more money in and there's your +ev.

AH, duh. I knew my logic was wrong. That was kind of dumb I guess, thank you for answering me.

Assuming your flush outs are your only good outs and you'll make no money after you hit 4.1:1 or whatever would be the breakeven point. If you're being offered those exacty odds EV(calling) = EV(folding), so it doesn't really matter what you do. In summary, if you're being offered better than 4.1:1 you should call, worse than 4.1:1 you should fold and at exactly 4.1:1 it doesn't matter.

You should also consider:
-your implied odds (money you'll win on future streets when you make you hand)
-the cleanliness of your outs (if the board is paired a flush won't necesarily win the pot, if you don't have the nut draw you could be drawing dead, if your opponent has 2 pair or a set one of your flush cards could make your opponent a full house)
-your non flush outs (if you have an overcard or two you might catch top pair and win)
-your ability to bluff on later streets (your opponent have a weak hand or be bluffing, and he may give up at a later point in the hand)

In general, these factors as a whole benefit you and allow you to call profitably with worse than the required pot odds.