GX.Sigma
Adventurer
Except those definitions are useless for the reasons I described in post #2. The point of the difficulty adjectives is so the DM can quickly decide which of the three basic DCs (10, 15, 20) to use. No DM asks himself "should this be average, quite hard, or hard?"Yeah, frankly, your right. The categories are badly named.
There are historic reasons for this, but that's not actually a great excuse.
Use this instead:
Task Difficulty = DC
Easy = 5
Average = 10
Quite hard = 15
Hard = 20
Very hard = 25
Nearly impossible = 30
Now, if your argument is that it's more important for the game-rules-terminology to be a technically accurate description of the gameworld than to be a tool to help the DM run the game, then we'll agree to disagree.