 There isn’t space to go through all these objections. We briefly discuss just one: Inverted Earth. Inverted Earth is an imaginary planet, on which things have complementary colors to the colors of their counterparts on Earth. The sky is yellow, grass is red, ripe tomatoes are green, and so on. The inhabitants of Inverted Earth undergo psychological attitudes and experiences with inverted intentional contents relative to those of people on Earth. They think that the sky is yellow, see that grass is red, etc. However, they call the sky ‘blue’, grass ‘green’, ripe tomatoes ‘red’, etc. just as we do. Indeed, in all respects consistent with the alterations just described, Inverted Earth is as much like Earth as possible.