Too Tight? Too Loose?

I guess I'm doing something right.

Julian Gardner article from January 2007:

In the WSOP’s $2,000 no-limit hold’em event this year, I made another final table, this time as chip leader, but not by much. This final table to me demonstrates my point about knowing your opponents. I knew Billy Duarte and had played with four or five of the other players during the tournament, but I knew nothing about one of the newbies, Robert Cohen. From Cohen’s initial play, I had him pinned as a tight player, but after a while he went crazy, showing a bluff reraise with 7-2 and then reraising an all-in on his blind with J-10. The other player, Troy Parkins, had Q-Q and bust him from the tournament. I’d rather play against world-class players that I know than people like Cohen who show themselves to be so unpredictable. If you know what your opponent is capable of, you can put him on a hand or assess whether he’s making a move. But if a previously rockish new player starts showing hands you thought he would never play, it’s hard to plan an effective strategy.