This is is because $20 is enough reason to participate in a dull task for an hour, so there is no dissonance.

I've sent him on errands to keep him at bay and given him dull tasks like washing lettuce, hoping he'd give up.

Cleaning them was a dull but exacting task, precisely what she wanted at the moment.

And all of them to do with the dull task of bringing people to their deaths.

If you have a dull task, your knowledge of robotics, metal processing and electronics will help.

The displays are left the dull task of providing context, sometimes bombarding visitors with information, background music, photographs and even video loops.

The unconscious, irregular tattoo of a bored man performing a dull task.

The dullest tasks, emptying closets and things of that sort, are fun to do with him.

They're dexterous, sensitive and don't mind doing dull and repetitive tasks in space a whit.