What's an example of a task that requires knowledge of physical objects to perform?
To have a magnetic clamp stick together with your magnet,

What's an example of a task that requires knowledge of physical objects to perform?
How to remove smells from a musty basement or other lingering odors.

What's an example of a task that requires knowledge of physical objects to perform?
how to keep black fabrics black

What's an example of a task that requires knowledge of physical objects to perform?
how to ensure your seam allowances are the right size?