Professor Phobos said:Just say yes. DM's discretion is exactly for this sort of thing. The rules default to abstraction designed for ease-of-play. If the situation requires that abstraction be provisionally extrapolated to something more detailed, just do it.
It's not hard. It'll make your game a thousand times better. On another thread there are people talking about how there are no rules in 3e for blocking an attack with a grabbed opponent. This implies that they think 3e can not already handle this situation. That terrifies me. Of course it can! You have a Strength attribute, right? Rules for grappling? What more do you need?
This is the problem with 3E's attempt to make up rules for everything. You can't actually have rules for everything, but by attempting to do so, you give the impression that anything not covered under the rules is impossible. DMs and players soon settle into the comfortable mental channels provided them by the seemingly all-encompassing ruleset, and are less and less inclined to bust out of it. I've noticed that in 3E games, it's the newbie players who try all the wacky, crazy stunts that blow the rules out of the water. Experienced players are too comfortable within the system.
For all its myriad flaws, 2E didn't have this particular problem. Every 2E DM knew that the rules were not all-encompassing... the idea was laughable. If your players ventured into territory not covered by the rules, it didn't throw you off balance; you just winged it and went from there.
4E seems to be trying to reclaim a bit of that mindset. It will be interesting to see how and if it succeeds.