What's an example of a task that requires knowledge of physical objects to perform?
To make food wild birds will find irresistible.

What's an example of a task that requires knowledge of physical objects to perform?
Clean up broken glass.

What's an example of a task that requires knowledge of physical objects to perform?
How can I cool drinks faster in the refrigerator?

What's an example of a task that requires knowledge of physical objects to perform?
How much bleach can you add to make drinking water safe?