No, it is the one making the assertion who has the burden of proof; the one who questions the assertion is not obliged to prove a negative.
scientific reports explaining all unexplained observations [...] before we could reasonably claim that the probability is very low
You’re privileging the UFO hypothesis without justification. It’s like insisting we must identify which specific neurons produce consciousness before we can reasonably claim God didn’t create it.
No, it is the one making the assertion who has the burden of proof; the one who questions the assertion is not obliged to prove a negative.
You’re privileging the UFO hypothesis without justification. It’s like insisting we must identify which specific neurons produce consciousness before we can reasonably claim God didn’t create it.