What's an example of a task that requires knowledge of physical objects to perform?
Keep rug from sliding.

What's an example of a task that requires knowledge of physical objects to perform?
Make use of post-its before you throw them away.

What's an example of a task that requires knowledge of physical objects to perform?
mold

What's an example of a task that requires knowledge of physical objects to perform?
Protect door knobs from paint job.