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

What's an example of a task that requires knowledge of physical objects to perform?
Mix the chocolate chips and butter how?

What's an example of a task that requires knowledge of physical objects to perform?
how do you let a hit expire on mturk?

What's an example of a task that requires knowledge of physical objects to perform?
How long should I workout each day