Looking back, and after years of skeptically analyzing countless paranormal and fringe claims, I see a definite telling pattern to such evidence. Alleged evidence of such things is also in that perfect gray zone, enough to be tantalizing but never enough to positively identify what is being viewed. Why are all the UAP videos blurry and indistinct? Because the ones that are in focus are identified – and they are mundane, or at least not alien. In other words, they are unidentified not because they are alien, but because they are blurry. Blurry evidence may be enough to spark interest, and even sustain it for a while, but eventually you get tired of it. Eventually you realize that Sasquatch is Blobsquatch – the phenomenon is the blurry photos, not what is allegedly in the photos.
I would also now argue for the judicious application of Occam’s Razor – the simplest explanation, the one that introduces the fewest new assumptions, is this. If you have a program gathering together all the unusual videos, photos, radar signatures, and sightings, there are going to be some that, by chance, are particularly unusual and difficult to identify. Even in a world without alien spacecraft buzzing around, any such program is going to produce video like the ones we are seeing, ones that defy definite identification. There will always be a residue of “unnkown,” but unknown does not mean aliens, any more than it means extradimensional visitors, time travelers, psychic bigfeet, angels, or any other specific phenomenon.