I understand where you're coming from completely, but do note that I referred to: '
technologically-advanced non-human intelligences', not to 'nuts-and-bolts aliens'.
Basically, my theory/thesis/contention/whatever you want to call it, is that everyone intuitively knows the answer to this question within themselves and that it is entirely subjective and dependent on the amount and/or quality of data they have been exposed to.
E.g. Helen Punchclock, your bog-standard
Ellen-worshipping suburban soccer mom has been exposed to very little meaningful data on the UFO phenomena and so easily pushes her finger to her head, rolls her eyes and says 'Duh, no' and the gun goes 'click'.
You and I and Jeff Rense might need to dig a little bit deeper into out reservoirs of intuition before summoning the courage to pull the metaphorical trigger, but I contend that the potential to get it right in exactly the same way is still there.
Not explaining myself well with this at all. I blame it on the fact that I'm typing on a laptop with a broken space bar
Sorry.