Defining your hand: is it ever a good idea?

[WarDekar]

This always tilts me...

I mean, everything you do in theory somehow defines your hand. Every action you take in the hand will always somehow alter his perceived range of you, thus everything you do "defines" your hand to some degree.

But in general, when people say they're going to "define" their hand, they do in fact narrow it down pretty tight which is an awful thing to do.