[RPG] Why does the Clumsy armor tag impose −1 ongoing for all rolls

dungeon-world

For example, why would it affect wisdom or intelligence?

…or am I just misunderstanding the rule?

Thank you!

Best Answer

The practical answer is that a general −1 to everything is a simpler rule with less bookkeeping that makes the game run faster.

For an in-fiction explanation: Wearing clumsy armour is tiring, uncomfortable and distracting. These all make it harder to think straight and be alert.