What's an example of a task that requires knowledge of physical objects to perform?
In order to grind coffee beans,

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

What's an example of a task that requires knowledge of physical objects to perform?
Weaken seal of a sealed envelope.

What's an example of a task that requires knowledge of physical objects to perform?
How do I know when onions are sauteed?