or continually attempt actions or activities their characters would have no knowledge of."
Using fire to attack a troll is not
an action that a character would have no knowledge of. Heck, the class table in the AD&D PHB even lists whether or not each class can use flaming oil (all can except monks).
I'm telling you how the game was actually played, in the skilled play paradigm, at the time Gygax was writing his rules.
It was taken for granted that players improved their knowledge of the game over time. That was an aspect of what skilled play meant. In that respect, it was a form of wargaming.
[MENTION=29398]Lanefan[/MENTION], upthread, following the logic of your (that is, [MENTION=23751]Maxperson[/MENTION]'s) preferences, said that it woudl be
good roleplaying to let your PC be killed by a troll rather than rely on your knowledge that a troll is vulnerable to fire. That's the opposite of skilled play as Gygax describes it. Playing the game your and Lanefan's way will not mean that the PCs of more experienced players are more successful as adventurers, because - if the game is played your and Lanefan's way - then an experienced player will deliberately
not draw upon his/her experience in playing his/her PC.
What you and Lanefan are advocating is an approach to play that I would say had its first express system support in RuenQuest or Chivalry & Sorcery, in the late 70s. No doubt people were playing D&D that way in that time also, but in doing so they were
disregarding Gygax's advice, not following it.