What's an example of a task that requires knowledge of physical objects to perform?
What is an important item to wear over your eyes when making a bicycle powered washing machine?

What's an example of a task that requires knowledge of physical objects to perform?
When making a modular origami swan what materials are needed?

What's an example of a task that requires knowledge of physical objects to perform?
how to prevent food from spinning while roasting

What's an example of a task that requires knowledge of physical objects to perform?
how do you turn off 'do not disturb' on an iphone?