What's an example of a task that requires knowledge of physical objects to perform?
How can you make an easy waterproofing solution for fabric?

What's an example of a task that requires knowledge of physical objects to perform?
To peel the papery skin from ginger.

What's an example of a task that requires knowledge of physical objects to perform?
How can I easily extract a splinter?

What's an example of a task that requires knowledge of physical objects to perform?
Make small biodegradable flower pot.