I suppose that depends on which book you're getting the rules from.
I always heard that it's "all warfare is based on deception".
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The best ones are thoughts that many people can relate to and they find something funny or interesting in regular stuff.
I suppose that depends on which book you're getting the rules from.
I always heard that it's "all warfare is based on deception".