For instance, on the planet Earth, man had always assumed that he was more intelligent than dolphins because he had achieved so much—the wheel, New York, wars and so on—whilst all the dolphins had ever done was muck about in the water having a good time. But conversely, the dolphins had always believed that they were far more intelligent than man—for precisely the same reasons.
Los foros de Internet y blogs personales no son considerados fuentes fiables y no deberían usarse como tal en Wikipedia porqué no verifican el hecho así que te recomendamos que no los uses como referencias, sino como puntos de partida. Puedes usar libros, revistas o páginas web que no sean los mencionados.
