Cause or effect? VPIP sliding

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If I'm playing at a table with a lot of 50+ VPIP'ers, my VPIP is probably going to be 25%. Because I can play more hands against those guys, and still be good.

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This is key. All to often I'm at a great table and all "TAGs" are at 18/9/3 or whatever and don't adjust there games. Great for me, but bad for them.