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

What's an example of a task that requires knowledge of physical objects to perform?
How can I prevent acne?

What's an example of a task that requires knowledge of physical objects to perform?
How can I keep a fence post plumb and in position while setting it?

What's an example of a task that requires knowledge of physical objects to perform?
Remove the metal solder point on the bottom of the bulb