It is called a thought experiment[0]. It's useful because it doesn't have to create such a time paradox because the thing only happens in your head. It's pretty

It is called a thought experiment[0]. It's useful because it doesn't have to create such a time paradox because the thing only happens in your head. It's pretty powerful to help people think outside the box. [0] https://en.wikipedia.org/wiki/Thought_experiment https://en.wikipedia.org/wiki/Thought_experiment