I asked this a few minutes ago on physics.stackexchange and they redirected me here
This question relates to the premise put forth in this TED talk, that reality is nothing but a shared hallucination:
I am totally on board with the idea that our senses often give us a skewed, warped, and possibly wrong idea about what we are perceiving.
My quibble / question is with the "nothing" part of "nothing but a shared hallucination"
For example, take a large fish tank that holds 1000 gallons of water. I understand that a crafty magician could possibly set up a sensatory trick with this. But barring that, my reality is that lifting this fish tank is not something that one human being - even the strongest human in the world - can do alone, given the parameters and variations on the human body.
The mass of this fish tank seems to be an invariant in the universe, no matter what hallucinated perceptions I/you/we have. The mass of this fish tank, it seems to me, is "real". And that's what I don't understand about "reality is nothing but a hallucination"
Can you help me reconcile my dilemma?