Is it true what we feel, touch, and see? If you believe the world is based on material, obviously the answer is yes. But think deeply, our sense is a variety of signals given by our brains. What if our brain is controlled by a computer?

Brain in a Vat, a well-famous thought experiment, which originated from Gilbert Harman. From his guess, a mad scientist puts a person’s brain in the vat full of life-sustaining liquid then connects its nerve to a supercomputer which stimulates the reality. It sounds like what we can do by a VR headset. The only difference is the brain in the vat is hard to find out the reality is stimulated by a computer, but we can.

For this project, I create a course in a video game called Super Mario Maker 2 which players can design and upload levels they made so others can play it. I built an amusement park for my character Toad. Does he have his own consciousness? Would he recognize his world is created by me in a video game?