What's an example of a task that requires knowledge of physical objects to perform?
How to keep thread from showing too much in a sewing project?

What's an example of a task that requires knowledge of physical objects to perform?
To make purple food coloring, you can

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

What's an example of a task that requires knowledge of physical objects to perform?
One seeks to make chicken like Chick-Fil-A.