Serious: What is the best evidence for the presence of an advanced, non-human intelligence?

I don't mean just UFOs or UAP, I mean direct evidence - personal observations, encounters, abductions by, or interactions with non humans. My top case is probably the 1975 Travis Walton case; due to the number of witnesses (6) who saw him thrown through the air by some kind of energy beam and then (5) passed lie detector tests given by the State's expert, about what they witnessed, all while under investigation for murder. Also, Walton's detailed description of his time on a craft and direct...

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