What's an example of a task that requires knowledge of physical objects to perform?
How long should you let Bentonite Green Sand dry?

What's an example of a task that requires knowledge of physical objects to perform?
To seal leather to a keyring, you can

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

What's an example of a task that requires knowledge of physical objects to perform?
To quickly locate a lost screw when it has fallen,