What's an example of a task that requires knowledge of physical objects to perform?
How to add a rustic look to wooden furniture?

What's an example of a task that requires knowledge of physical objects to perform?
how to keep knives sharp?

What's an example of a task that requires knowledge of physical objects to perform?
How to save money on small electronics batteries using an A 23, 12 V battery from Walmart.

What's an example of a task that requires knowledge of physical objects to perform?
to get free internet.