Raven Crowking said:That's an oft-used strawman.
And accusations of "strawman" are an oft-used technique for being dismissive. I suggest you not use that technique with me

In this case, it isn't a strawman - it's reductio ad absurdum, which has solid uses...
You see, RC, if the argument is often used, perhaps you should stop dismissing it out of hand. Rather than assume that we're all nasty little liars out to win a point, consider the possibility that we're using it because it is very close to some of our experiences - that what I'm suggesting isn't nearly as absurd as you contend - indicating that your definition doesn't fit common enough real-world situations.
Maybe you never went through the phase, but I'll bet for a lot of folks here many older TSR modules were rather like this - there was often enough no dialog to be had except with other PCs (the module being composed of monsters and traps). The monsters are beaten by combat, and the traps through methods strictly defined in the text. The thing can be played as a tactical wargame...
And that's not surprising. RPGs branched off of wargaming roots. Somewhere, there's a dividing line between them. But I suggest the dividing line is broad and vague, and has far more to do with what is going on inside a player's head than with exactly how much adaptive flex the environment theoretically has.
Adaptive environment is usually a wonderful aid to roleplaying. However, I think you mistake "wonderful aid" for "necessary condition".