Reddit reviews The Pentagon's Brain: An Uncensored History of DARPA, America's Top-Secret Military Research Agency

As far as the domestic use of parametric speakers, as the above link suggests, it can be used in advertising.

As for the military applications, the purpose was a "voice of God weapon." The hope was that it could be used, in conjunction with a holographic light show to influence an enemy population, to convince them to lay down their arms and listen to whatever deity was being projected to them.

There are conspiracy theories surrounding this technology, which I would like to make it a point I do not necessarily believe, that suggest the government is planning on faking an alien invasion, or the return of Jesus, using this technology to manipulate the masses into doing their bidding.

EDIT: There is a good book, THE PENTAGON'S BRAIN, that details a lot of the strange weapons DARPA has developed over the years, along with the history of the group.

There's no question there, they have. But they said they stopped.

https://www.amazon.com/Pentagons-Brain-Uncensored-Americas-Top-Secret/dp/0316371661

This is covered in The Pentagon's Brain: An Uncensored History of DARPA which is a really good book. Licklier came up with the decentralized architecture at the meeting where he pitched the idea for funding. Someone pointed out that connecting many computers would cause a crash to take down the whole network and he said "No problem, we're planning an architecture where information is routed along multiple pathways, and spontaneously bypasses damaged nodes", even though he hadn't thought of that until that moment.

Project Soul Catcher

Inside Track

Pentagon's Brain

Trance:Formation of America

Very difficult I think for liberals to disagree on Trump.

I mean, I think I was wrong when I said that Trump would be no worse than Bush. I now realize that Bush likely had a sense of his own ineptitude, and the absurdity that this bumbling dolt of a nobody would be elevated to the most powerful position in the world. It's a bit funny that the Iraq war fiasco of his creation seems like a fairly small thing right now.

I am reading this amazing book right now, The Pentagon's Brain -- an uncensored history of DARPA, Anerica's top secret research agency, the first chapter, on the detonation of the first hydrogen bomb in 1954, will almost literally make you shit your pants. (mini-spoiler: the top scientists in the land didn't know if they were setting the world on fire -- the military were completely unfazed, they had to have it, or the Russians would have it and blow the world up anyway.)