Accounting for cards that have been discarded

[MikeRand2000]

Happy holidays, everyone.

Quick question: in all of the pot/effective/implied odds discussions I see, I never see anybody consider the probability that one or more of their outs have already been dealt and discarded.

For example, I have AhTh and the flop comes Tc7d2s. Normally that would be a strong hand. But, what if I know (via some tell) that an Ace has already been ditched and a couple of other players have KT or QT? If a king/queen falls on the turn, shouldn't I say that I'm playing to 2 outs and not 3?

I just never see this adjustment made for either cards that have been discarded or outs that are sitting in someone elses hand. Is it wrong to do that?

Thanks,

Mike