One of the basic problems with "metagaming" is that while DMs seem quite keen on "Your character wouldn't know that", they rarely spend much time on "This is what your character DOES know".
Think of all the things you have never personally encountered, but know quite a bit about. I have never served in the military, but know quite a bit about what ships, planes, tanks etc... are in service and what their weapons are and basic knowledge of the performace of the hardware and weapons.
Having a fighter "know" that a skeleton is resistant to cutting/thrusting weapons, but not to crushing weapons, seems to me like the kind of thing that pretty much anyone headed into the "adventuring professions" would have learned one way or another (mentor, stories, dusty tomes etc...).
Also it is no more outlandish that a character would have that sort of knowledge than the fact that I know you don't really want to try and bring down an F-22 with radar guided missiles.
If it's a unique creature that appeared in this month's dragon and a player starts spouting off it's stats and weaknesses, yah that's metagaming. Knowing that Demons and Devils are vunerable to holy weapons or Trolls are vunerable to fire strikes me as being basic knowledge. When you are headed into a profession like adventuring, it would be folly to not know at least a bit about any likely opponents.
The only way I could see justifying a lack of "basic" monster knowledge, is if you had a situation something like that at the begining of many fantasy stories, where some ancient evil is returning after many millenia and the chain of knowledge has broken down leaving only fragmentary information about the "evil ones". Even then some knowledge would have persisted, if perhaps only in the form of warning to children not to do X Y or Z as Monster A would come and eat them.
On an established world where such things are an ongoing, common occurance like Greyhawk or especially Forgotten Realms. Denying them that kind of knowledge is just silly.
Think of all the things you have never personally encountered, but know quite a bit about. I have never served in the military, but know quite a bit about what ships, planes, tanks etc... are in service and what their weapons are and basic knowledge of the performace of the hardware and weapons.
Having a fighter "know" that a skeleton is resistant to cutting/thrusting weapons, but not to crushing weapons, seems to me like the kind of thing that pretty much anyone headed into the "adventuring professions" would have learned one way or another (mentor, stories, dusty tomes etc...).
Also it is no more outlandish that a character would have that sort of knowledge than the fact that I know you don't really want to try and bring down an F-22 with radar guided missiles.
If it's a unique creature that appeared in this month's dragon and a player starts spouting off it's stats and weaknesses, yah that's metagaming. Knowing that Demons and Devils are vunerable to holy weapons or Trolls are vunerable to fire strikes me as being basic knowledge. When you are headed into a profession like adventuring, it would be folly to not know at least a bit about any likely opponents.
The only way I could see justifying a lack of "basic" monster knowledge, is if you had a situation something like that at the begining of many fantasy stories, where some ancient evil is returning after many millenia and the chain of knowledge has broken down leaving only fragmentary information about the "evil ones". Even then some knowledge would have persisted, if perhaps only in the form of warning to children not to do X Y or Z as Monster A would come and eat them.
On an established world where such things are an ongoing, common occurance like Greyhawk or especially Forgotten Realms. Denying them that kind of knowledge is just silly.
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