Effort
When you really need to accomplish a task, you can try harder. In game terms, this is called applying Effort. Applying Effort costs 3 points from the appropriate stat Pool. Effort makes a task easier, just as a skill does.
A core character has an Effort of 1, meaning you can only use Effort to ease a task by one step. A character with a higher Effort score can apply more Effort to a task, easing it by additional steps.