What's an example of a task that requires knowledge of physical objects to perform?
How can you reduce swelling under your eyes at home?

What's an example of a task that requires knowledge of physical objects to perform?
D.I.Y crazy putty with crazy sand and glue.

What's an example of a task that requires knowledge of physical objects to perform?
How can I keep a pot from boiling over the top?

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