Brain snatched

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Brain snatched

  1. 1. Thought experiment 1<br />Brain Snatched<br />
  2. 2. Do we have any REASON to suppose that the earth and everything on it really exists?<br />Or could it all be an illusion!<br />
  3. 3. A brain in a vat<br />Colin Spiggott about to relax and watch the film Invasion of the body snatchers<br />
  4. 4. Aliens from another planet<br />
  5. 5. A night of nightmares<br />
  6. 6. Neptune<br />
  7. 7. Removing the brain<br />
  8. 8. Brain in a vat<br />
  9. 9. Connected to the super computer<br />
  10. 10. It’s not real, it’s all an illusion<br />
  11. 11. Carrot to goldfish<br />
  12. 12. Immersed in a computer program<br />
  13. 13. Wake up…it’s a nightmare<br />
  14. 14. Hideous Neptunian alien <br />
  15. 15. ‘This is you Colin’<br />
  16. 16. How do you know that you are not a brain in a vat?<br />
  17. 17. 2 Hypothesis<br />1. What you see around you is all virtual – An illusion. You are really a disembodied brain floating in water connected to a sophisticated super computer that generates perfect experiences as we know them<br />What you see around you is real<br />
  18. 18. What justifies that belief?<br />In order to know something you need grounds for believing it. You must be justified in believing what you do. So in order to know that what you see is real and not virtual, you must be able to justify that belief. But it seems you cannot justify it. So, astonishingly, it seems you do not know that what you are now experiencing is real.<br />
  19. 19. An astonishing conclusion<br />A sceptical conclusion<br />Sceptics claim that we do not know what we might think we know. The claim that we do not know anything about the world around us is called scepticism.<br />http://www.youtube.com/watch?v=ursdoT66JlU<br />
  20. 20. Lisa the sceptic<br />Watch the episode from 6 minutes onwards<br />

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