Convincing, against my expectations. It’s impossible to accept what must otherwise be the case: that the vast range and amount of direct eye-witness evidence is all either faked or imagined. And it’s even more clear that the US authorities believe in UFOs, and don’t want us to.
So why do the aliens people have seen, met, and done post-mortems on seem humanoid? Isn’t it more likely that alien life is utterly, er, alien? Yes. But if alien life does exist, and if it is humanoid, then the application of Ockham’s Razor would suggest that either human life is a plant from another planet, or, get this, that the aliens are WHAT WE WILL EVOLVE INTO, COME BACK IN TIME TO VISIT US. It’s Doctor Who.