Its not, which is why it should not be treated as a theory. It is a speculation. On the other hand, a claim that we are the first species on the planet to reac

Its not, which is why it should not be treated as a theory. It is a speculation. On the other hand, a claim that we are the first species on the planet to reach a particular point of development of civilisation (agriculture, cities, various levels of technology) is a falsifiable statement.