I'm with Iserith.
I'm with you (secondhander) on:
- Don't be inconsiderate.
- All forms of RPGing are legitimate; play the way you want at your table.
Where I take offense is the "...but you're not roleplaying if you do" part.
Personally, I don't think it's a very interesting sort of roleplaying to, in effect, be told, "This is how your character would behave. Act that out for everybody else at the table." That's sort of like improv, but it's even a particularly narrow form of that because what you can act has been constrained. (Somebody...I think it might have been Saelorn...went so far as to say that wood-elves will behave certain ways. As if it's somehow written in stone how a wood-elf sees the world.)
I'm honestly confused how you concluded that is what I think. I don't think people have to be constrained in how that act out their character. I assume it's my fault for not being clear, but let me give it another shot.
This started when Aaron and I were discussing an example, where a rogue is separated from his party, wanders into a dungeon, and is drowned by a water trap. All the players are at the table to hear the DM run this situation with the rogue. But of course, their players were not there in the dungeon at the time. So, a few hours later in game time, the rest of the players go into the dungeon, and the mage, right before getting to where the water trap is, casts breathe underwater, even though the mage perceived no signs that there was a trap there to begin with, much less a water trap.
All I was saying was I feel personally that that is a clear example of metagaming, and the wizard should not have known about the trap, and to prepare the perfect spell immediately beforehand is a form of meta-game powergaming, and (in my opinion) not in the spirit of role-playing.
But, not everyone agrees with me about role-playing and whether that was wrong or not. So to each their own, play it how you want to play it. I was just giving some arguments to back up my belief.
But I never, ever said the way a person role-plays their character in general has to be constrained. If you want to have a wood elf have whatever traits or personality you want, by all means go for it. Totally allowed in my games. All I'm saying is, it's a little off-putting to me that a character can just know a trap is there by fiat just because they overheard the DM telling another player's character about it earlier.
That's all. Not sure why people think I'm saying you can't create your character and backstory however you want. And again, I'm not saying you have to do it my way regarding the meta-game knowledge, I'm just saying this is how I and my group do it, and these are the reasons why.