Henrix said:
...Iwould generally allow a PC to make a spellcraft check during his turn, to see if he recognized the spell that was cast earlier. Not all the time, and certainly not if he was making a nuisance of himself.
the use of spellcraft in this way is not really all that different from a spot check: something happens in your line of sight, your brain processes the information and tells you what to make of the situation. you don't need to take an action to do this. what you propose here, is more likely to use up extra game time while the players try to remember what spells were cast, in what order and so on. plus it also seems to imply the very ridiculous notion that you can't think if it's not your turn. the spellcraft skill check happen in the character's head after all. there's not outside effect.
from your own posts earlier you've tried to point out that spellcraft is a free action. but if you look at the passages you quoted, you'll notice that there is no passage that explicitly says that it is. initially there is the: "Using a skill might take a round, take no time, or take several rounds or even longer. Most skill uses are standard actions, moveequivalent actions, or full-round actions." but then you go on to point out
But that still does not say anything about spellcraft checks.
next you say that it's a free action:
Counterspells, p. 152:
"If the target of your counterspell tries to cast a spell, make a Spellcraft check (DC 15 + the spell’s level). This check is a free action."
but, if i'm not mistaken, that passage specifically relates to counterspelling. IF one is counterspelling, it's a free action. to me this simply states in plain english that using the check doesn't interfere with the counterspelling, i.e. doesn't take up any more time. it doesn't automatically have any bearing on using the skill at any other time. any assumptions to that effect are ... well ... assumptions.
like i said before, this is a skill check that happens entirely in your head. it's not like jump, or open locks or bluff that requires you to do something physically to something/one else. people make those sort of decisions all the time. looking at traffic on the road and deciding to take the next lane over; gauging the speed of an oncoming car and relevant pedestrians to decide if you should cross the road now or not; seeing the change in expression and body language of two people and knowing that you should find another route coz they're about to fight.
as for the whole nuisance issue ... it seems kinda tyrannical to tell someone he's being a nuisance for using his skills when they're applicable. of course he might actually be a nuisance, but i find it hard to believe that he gets that label based on this alone. ...
then again, maybe i'm biased coz in the games i play, we always let the caster make their checks when they come up.
~NegZ