Yeah, plate tectonics is 'only' a theory in exactly the same way that Usain Bolt is 'only' an Olympic gold medallist, and for similar reasons (ie for beating the competition and being the best in the relevant field).
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'
