UFO’s Physics-Defying Maneuvers Said to Be by Advanced Human or Space Alien Engineering Supernatural Ruled Out?

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From mach 10 velocity to full stop instantaneously, UFO’s are said to be either advanced human engineering or space alien craft, yet doesn’t supernatural demonic activity (to fool humanity) make more sense than human engineering defying physics or space aliens for which though there is no evidence other than the sightings, no physical evidence?