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Originally posted by gvret
how do we know for sure that we are not just brains in a vat as part of a scientific experiment?
Originally posted by PurdueNuc
You're absolutely correct, there's no way we could actually determine whether or not our bodies actually exist (for that matter, we can't determine if anything truly exists) - all we know for certain is that our minds exist (Cogito, ergo sum) . Many of the great philosophers have pondered this.