Assume we have a 3-dimensional video game with a puppy in it. Suppose somehow we can connect every point of the 3-d puppy with the corresponding point in the brain of the game player (the controller). If the puppy hits something hard in the 3-d video game by his right hand, the player would also feel hitting something hard with his right hand. If the puppy sees a blue bird in the game, he sees a blue bird in his brain too (even though there isn’t any blue bird in the real world of the player). If the puppy is flying, the player would “feel” flying as well, despite the fact that he is not flying in his real world. His feeling is exactly the same as the 3-d puppy's. He feels the same world as the puppy does.
- If, in addition to his puppy eyes in the game, he also keeps his own eyes in the real world, then he knows his feeling of the world in the game is only a simulation rather than real.
- However, if he cannot keep his own eyes in the real world, then he would not know his feeling of the game world is unreal, rather he would consider the game world as the only world that exists, and he wouldn’t realize that he is actually blind to an outside real world.
- He might remember there was an outside real world before he got connected to the puppy. But if he was born to be connected to the puppy and had never seen the outside real world, then he would believe the game world is the only real world and would never realize there is an outside real world which he is actually blinded to.
Pg 14
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