And one can also disbelieve that America exists (I personally haven't been there), and that all the TV shows are just sensational stories designed to attract an audience:
and that the Earth is round and looks the way it does from space (I haven't been to space either).
Acknowledging the probability, in my opinion, is much more promising than simply disbelieving.
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"So much has gone
and little is new"
David Bowie