Hussar said:In 3e, the rule is stated at the outset. Thus, it's not created by fiat. However, its application is EXACTLY the same. Equally applied to all PC's and NPC's. While the actual mechanic may vary from what our imaginary DM created, after he's rules, there is no real difference between the two.
In other words, all fiat did was force the DM to craft a rule. Once the rule is crafted, the DM should be equally bound to it as if it were a prescripted rule. Once the determination is made, the DM has exactly the same power in both situations.
This is where I think D&D made some errors. Distance is really not important but the difficulty. They would have been better off simplifying things such that the difficulty checks were LESS granular and were just easy, medium, hard, very difficult, crazy impossible etc. I think this is true for most all types of checks.
You mentioned that Power is not a zero-sum game between DMs and Players, which I agree. It is a zero-sum game between DMs, Players and the Rules. By that I mean in the case above...
The DM could set the difficulty
THe player could set the difficulty (unusual but could involve negotiation)
The rules could set the difficulty.
For say jumping, if you have DCs based on distance then it is really the rules setting the difficulty, the player didn't get any more power out of the deal vs if the DM sets the difficulty.
Now if it is more of a negotiation (The DM says it is a hard maneuver but the player says he will jump off a horse to get more distance, or that this jump is really important to him so the DM lowers the difficulty or gets a bonus...whatever) then both the player and the DM get more power.
[Actually the way I describe it, if the rules basically call for DM vs Player negotiation then it is not longer a 2-way 0-sum game but I dont want to complicate matters]
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