I guess it all depends on your priors. If 1000 witnesses came to you saying their personal witness testimony that they were raped by someone matching descriptio

I guess it all depends on your priors. If 1000 witnesses came to you saying their personal witness testimony that they were raped by someone matching description X. And some of those witnesses corroborated events related by other witnesses. I can't say for sure for you specifically, but I guess you'd believe these witnesses. I'm even more certain that a court, and a jury would believe these 1000 witnesses. The priors help support that. But when 100,000 people come forward saying they saw a craft/ were abducted/saw an alien, it's still considered unlikely. The only difference is your priors. If the government confirmed NHI presence and activity on Earth tomorrow, your priors would likely be updated, and you'd re-evaluate your assessment of all that other witness testimony! :)