Originally Posted by detourglr
Cardplayer "Jonathon Duhamel Issue" Volume 23 Issue 24 Pg74.
The quote is unattributed, so I can't tell whose advice it is. In any case, it applies to a situation where you have no idea of your opponents skills, and thus of your relative ability.
But how often is that actually so? In my case, when I sit at a cash table, even if I don't recognize anyone, I know I'm almost certainly +EV because in the long term, I've won at every level I've ever played. The chance I'll land on a table stacked with good players I don't recognize is minimal.
In addition, you can table select. This isn't necessarily limited to looking for weak tables. Even a table that's strong overall can be quite profitable if there are one or two big enough fish and you get decent position. You want to cover them, and you simply avoid and/or pot control vs the good players.