Because the subject notices no change and converses smoothly with locals, the complications of confusion, semantic adaptation, and amnesia do not arise

Although Block thinks “that these criticisms can be defeated on their own terms” (1990, 61), his “Inverted Earth” scenario is designed to sidestep them. (See Block 1990, 1996a, 2003.)[22] Instead of considering an “overnight” inversion and the consequent confusion, semantic adaptation and amnesia, your eyes are fitted with “color inverting lenses” and you are transported to another planet—Inverted Earth. This is a place just like Earth except that each object has “the complementary color of [