What's an example of a task that requires knowledge of physical objects to perform?
How to draw a vertical divide.

What's an example of a task that requires knowledge of physical objects to perform?
How to remove pilling once it has formed on clothing?

What's an example of a task that requires knowledge of physical objects to perform?
How can I remove permanent marker stains from furniture?

What's an example of a task that requires knowledge of physical objects to perform?
How do I seal joints in the vapor barrier when adding a sunroom addition to a house?