But personally, I'm pretty damn thankful for their sacrifice so that we live in a largely polio-free world today.
I'm not sure when "what you can do for your country" got so small that people aren't willing to take the minuscule risk of vaccination side effects in order to gift the substantial benefit to their neighbors. Used to be, selfishness like that made you an asshole.
You realize this is a contradiction, right?
We all know how that turned out.
What about the rest of our modern scientific knowledge base? Gravity. Electromagnetism. Chemistry. Biology. There are entire swathes of disciplines that are well nailed down by results, and used daily as though they were fact. Because they work reliably.
So I'm going to call BS on the idea that science can't be conclusive because of the definition of the scientific method. It's arguing in bad faith to point at the 1% and ignore the 99%.
And that's exactly what GP was stating, which is why parent's quip against an out of context quote was unreasonably pedantic.
I say this as someone who is vaccinated and encourages others to be so as well.