That's what I a call a content free sentence. Saying "can" also implies "might not". "Need" needs to come with "in order to do X". I don't need to breathe, bu

That's what I a call a content free sentence. Saying "can" also implies "might not". "Need" needs to come with "in order to do X". I don't need to breathe, but if I want to stay alive I do. So do I need to breather or not? It's either.