When I was a freshman at MIT, a physics professor asked us in class how many would be willing to go to Mars, but only if it were a one way trip. About a quarter of the class raised their hands.
Here's a thought experiment on how to test whether these are hallucinations or ghosts: lie to some people that their family member has died with an elaborate hoax (fake body, send the family member on vacation, etc.) See if the person "hallucinates" or not. If yes, then that's consistent with "ghosts" being all in the mind. If not...
Of course this particular experiment would be grossly unethical to implement, but maybe similar experiments would get at it. Do relatives that go on long vacations or to war etc. prompt hallucinations?
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Black Parrot might be looking for the word "cardinal" (one, two, three, three and a half) versus "ordinal" (1st, 2nd, 3rd...)
When I was a freshman at MIT, a physics professor asked us in class how many would be willing to go to Mars, but only if it were a one way trip. About a quarter of the class raised their hands.
Here's a thought experiment on how to test whether these are hallucinations or ghosts: lie to some people that their family member has died with an elaborate hoax (fake body, send the family member on vacation, etc.) See if the person "hallucinates" or not. If yes, then that's consistent with "ghosts" being all in the mind. If not... Of course this particular experiment would be grossly unethical to implement, but maybe similar experiments would get at it. Do relatives that go on long vacations or to war etc. prompt hallucinations?