All serious poker players try to minimize their tells, obviously. There are a couple ways to go about this. One is the robotic approch: where your face becomes a mask and your voice a monotone, at least while the hand is being played. . . . The other is the manic method, where you affect a whole bunch of tics, twitches, and expressions, and mix them up with a river of insane babble. The idea is to overwhelm your opponents with clues, so they can't sort out what's going on. This approach can be effective, but for normal people it's hard to pull off. (If you've spent part of your life in an institution, this method may come naturally.)

— Dan Harrington

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