not sure if this is helpful. but not just reverse implied odds. but often you have to discount outs as you aren't really sure if they'll win for you.

you may have had nut flush or nut straight example where it's straight-forward.

but most times you have to give some consideration to your opponents cards... and in the nut flush example, what if your opponent has 2 of the suit too, so there are less in the deck for you to hit