Lanefan
Victoria Rules
I think the counter-point being made is that the difficulty of a task should be absolute, and independent of the character who is trying to do it.I did not say they were caused by character level.
I said something that would tell you a DC that would be an easy, medium, or hard check for a given character level.
The character's level does not cause the check to be anything. But if you need a DC, and you know that it is already supposed to be hard, then it is supremely useful to have a reference for what "a hard DC" should be. You already know the DC is hard. The table just tells you what the number should be, so that that known difficulty is achieved reasonably.
Most GMs must by trial and error kludge together a mental list for this. They know that a check should be hard, but us 15 hard? Is it ridiculously easy or effectively unwinnable? They must slowly memorize it by, in brief, screwing it up enough times first. It is one of the ongoing tragedies of TTRPG design that people vilify a written list of such things, which would let fresh GMs (or even just forgetful ones, hello hi how are you) focus their attention on the more interesting parts of GMing.
If characters' skills grow in power, then a difficult check for a high level character should be more difficult than that for a low level character. Hence, level matters for the meaning of "difficult check." That doesn't mean level causes a check to be difficult.
In other words, you don't measure difficulty in relation to the characters, you measure difficulty in relation to other similar tasks and let the numbers fall where they may. What this means in practice is that when writing an adventure for higher-level types you-as-author need to explain why these tasks are more difficult than similar tasks would be elsewhere (e.g. why climbing this sheer cliff is DC 25 when that very similar cliff we met last year was only DC 15). Otherwise you've lost touch with realism.