What's an example of a task that requires knowledge of physical objects to perform?
How can I cover the doorknob hole on an old door?

What's an example of a task that requires knowledge of physical objects to perform?
juice a cucumber without a juicer

What's an example of a task that requires knowledge of physical objects to perform?
How can I protect a cell phone from the rain?

What's an example of a task that requires knowledge of physical objects to perform?
How do I keep the end of the rope from fraying when making a hangman's noose for backpack?