What's an example of a task that requires knowledge of physical objects to perform?
How to Unclog a Sink

What's an example of a task that requires knowledge of physical objects to perform?
How do you dispose of grease?

What's an example of a task that requires knowledge of physical objects to perform?
how do you recite something?

What's an example of a task that requires knowledge of physical objects to perform?
To save money with each toilet flush,