What's an example of a task that requires knowledge of physical objects to perform?
To close the metal rings in chainmail.

What's an example of a task that requires knowledge of physical objects to perform?
How can you find out if a large woman is pregnant or just big?

What's an example of a task that requires knowledge of physical objects to perform?
How can you tell if a sink hole has stopped growing and can be filled?

What's an example of a task that requires knowledge of physical objects to perform?
How to tie hair up without a hair tie?