loose lips sink ships
No one is disputing the validity of the law of supply and demand. But many complex societies get along fine without it, like the social insects. Hands are useful for gripping branches and climbing trees as well as working flint tools. But cephalopods also can manipulate objects with great dexterity.
Oh, and by the way...
https://currently.att.yahoo.com/news/aliens-havent-landed-why-skeptical-090251254.html#
My point is that the recent flurry of UFO reports sets off all sorts of alarms in my brain. Intuition and suspicion is no reason to believe anything, but it is a very good reason to be skeptical.