Just to be clear, by the standard you're proposing there's also no scientific evidence that posting on Hacker News is safe. There is no scientific evidence that the internet is safe. There is no scientific evidence that wearing a mask is safe.
There is, of course, an INCREDIBLE amount of EVIDENCE for all of these things being safe (including the vaccine). There has simply never been a 100% complete full evaluation of safety to the rigorous standards of an academic paper.
But it's really important to understand that we know TONS of things without having that rigor, and we don't hold the vast majority of our life to that standard.
Heck, we outright know that driving IS dangerous, ridiculously so compared to taking a vaccine, but we still allow that.
There is, of course, an INCREDIBLE amount of EVIDENCE for all of these things being safe (including the vaccine). There has simply never been a 100% complete full evaluation of safety to the rigorous standards of an academic paper.
But it's really important to understand that we know TONS of things without having that rigor, and we don't hold the vast majority of our life to that standard.
Heck, we outright know that driving IS dangerous, ridiculously so compared to taking a vaccine, but we still allow that.