What's an example of a task that requires knowledge of physical objects to perform?
Prevent napkin from sticking to cup.

What's an example of a task that requires knowledge of physical objects to perform?
Where can I get the steel for making a homemade knife ?

What's an example of a task that requires knowledge of physical objects to perform?
Remove dust from car crevices.

What's an example of a task that requires knowledge of physical objects to perform?
How do you get rid of a wasp's nest outside of your home?