What's an example of a task that requires knowledge of physical objects to perform?
How can I open a letter so that no one will know I unsealed the envelope?

What's an example of a task that requires knowledge of physical objects to perform?
To make homegrown tomatoes sweeter.

What's an example of a task that requires knowledge of physical objects to perform?
How do you get gluten free bread to rise?

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