In the same respect the level of organization and silence required to hide such evidence is extraordinary. It’s every government of every country that would have to keep what they know under wraps. The more people involved in a conspiracy the more likely it is for the silence to be broken. It’s not that every bit of “evidence” is faked, it’s that the majority of it that comes from a government source is misinterpreted from someone who wants it to be aliens as opposed to having an independent expert in whatever field study it.

As far as we can tell, other than people looking to sell books, all the “evidence” we have of visitations/technology has been disproven by either independent analysis of footage, or the eventual release of government documentation that shows it was an experiment “we” conducted. Those kinds of things are kept confidential for a certain amount of time in case they are connected to potential military research.

There is absolutely nothing from what we currently understand about physics that would allow for traveling the kinds of distances necessary. The vast majority of what is left to understand about how “physics” works is in relation to the types of energy/particles that don’t interact with matter as we currently understand it so it couldn’t carry anything “physical” with it, unless we’re now talking about “dark matter” aliens, but if that were the case then we’d have no evidence of their existence because we can’t observe that as it doesn’t interact with the matter we have access to. A camera cant capture a “dark matter” substance.

I say all of this as someone who WANTS aliens to exist and be able to visit us. It’s very upsetting to me to think it isn’t possible lol