What's an example of a task that requires knowledge of physical objects to perform?
how do you roll your eyes?

What's an example of a task that requires knowledge of physical objects to perform?
To collect the fat from from boiled milk, you should

What's an example of a task that requires knowledge of physical objects to perform?
how do you sterilize a needle?

What's an example of a task that requires knowledge of physical objects to perform?
How do you make a tornado in a bottle?