[Harv72b]

[ QUOTE ]
There's a lot more that can be going on other than "we are toast or the guy has air". And a lot of those hands, we don't mind if they fold for one more bet. Far too often you call the turn raise, the river goes check, check, and they show down their middle pair or whatever.

[/ QUOTE ]

True, but the information we gain on the currently unknown player to our immediate left, as well as the metagame implications of taking this line with top pair, can make up for a missed bet or two on this particular hand over the course of the table session. Assuming of course that he calls a turn 3-bet and/or river bet with less than top pair himself.