I put one up, which was immediately dismissed. Fine. I could put hundreds of photos, videos, recounts etc up, I know you'd call bollocks on all of them. It'd be a waste of time, as you've convinced yourself it's not possible, therefore it isn't true. Which is, in my opinion, absolutely the worst possible way to think.
No, with a person. I'm not having this discussion with you, youre being facetious and frankly a bit annoying. It's great that you can sit there and call claim to what's true and what's not based on your own opinion. Must be wonderful. I haven't seen anything from you to disprove anything. Ever. Must be all those black holes and Neutron Stars that don't exist.
So you base things on discussions you have with other people. There has never been a verified picture of an alien or a video of one or an alien space craft. Shaky, blurred things which could be anything. Amazing in this era of high definition cameras everywhere. I can't disprove the existence of aliens on earth. I can't disprove that there there are herds of tyrannosaurus red rampaging about either. The thing is you can't prove the existence of them either. It's great you can sit there and call claim on what's true and what's not based on your opinion of what other's opinions are. Unless you have seen an alien yourself, in which case it is a shame you didn't have your mobile with you.
Are you as silly as you come across on this subject? When you have clear proof of an alien on earth come back. Not what someone told you or you read about. That is not to say there are not forms of life elsewhere in the universe. Just that they aren't visiting here.