Quote:
Originally Posted by mplafleur
The premise that you can't prove a negative it this.
To take your cat example.
Hypothisis: There are no white cats.
You can't prove this hypothisis, you can only disprove it by finding a white cat.
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Yes, that's what I was getting at. It's the black swan example. There are no white cats is a universal negative claim. But not all negatives are universal claims.
For instance, the hydrogen system in question does not work can be proven. It's not a claim about all hydrogen systems it's just a claim about this particular one.