What's an example of a task that requires knowledge of physical objects to perform?
How do I compare cheap airline tickets on multiple websites?

What's an example of a task that requires knowledge of physical objects to perform?
Can your own dried beans.

What's an example of a task that requires knowledge of physical objects to perform?
To cut the trucks of roller skates in half.

What's an example of a task that requires knowledge of physical objects to perform?
To keep mildew from growing on your shower curtain.