In a way they already do. The DC system is essentially % / 5, and the DC is increased depending on how vanishingly small the odds are that you can do something.
But it seems to me it would be more intuitive to use percentages to determine the odds that you will succeed at something. For example, that you have a 50% chance to scale a rough wall without scaling tools, while only a 10% chance of scaling a wall made of ice. Or that you have a 70% chance of convincing a gullible child that you are a great hero, but only a 10% chance to persuade the sultan that you are a sheik from the land of Ababwa.
Wouldn't it be easier to guess odds on the fly if we used percentages? What are the arguments to using the DC system instead?
But it seems to me it would be more intuitive to use percentages to determine the odds that you will succeed at something. For example, that you have a 50% chance to scale a rough wall without scaling tools, while only a 10% chance of scaling a wall made of ice. Or that you have a 70% chance of convincing a gullible child that you are a great hero, but only a 10% chance to persuade the sultan that you are a sheik from the land of Ababwa.
Wouldn't it be easier to guess odds on the fly if we used percentages? What are the arguments to using the DC system instead?