Yup, negative knowledge is more robust too

It only takes seeing one black swan to disprove “all swans are not white”

While you can observe 30 or 300 years of white swans, and never prove the converse: “all swans are white”

This might sound trivial to some people, until you start hearing “this is a 1 in 10,000 year event” from your banker, 5 times in 50 years

Also related to questions like “Is this airplane going to fall out of the sky?”