What's an example of a task that requires knowledge of physical objects to perform?
remove dust from binocular lenses

What's an example of a task that requires knowledge of physical objects to perform?
ice cupcakes with canned frosting

What's an example of a task that requires knowledge of physical objects to perform?
How can I renew my black leather jacket that looks dull and gray

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