What's an example of a task that requires knowledge of physical objects to perform?
How can you avoid Poison Ivy when you are outside?

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 apply vinyl lettering to a interior wall,

What's an example of a task that requires knowledge of physical objects to perform?
how do you create an instructable?