As a side note; I'm fully aware that hiding behind this rumored miraculous technology might merely be a government-funded psychological operation designed to ilicit a defeatist response, but the question remains valid nonetheless. Hiding your edge is just common sense, so let's examine the possibilities.


I'll provide a few interesting sources documenting some of the supposed technological marvels kept from the public view:

An article that talks about high speed mag-lev subway system that spans the entirety of the USA's underground military/R&D base network: http://www.thelivingmoon.com/45jack_files/03files/The_Tubes.html

An entry level article about voice-to-skull tech: https://en.wikipedia.org/wiki/Microwave_auditory_effect

A review of electrogravitics (a supposed propulsion system of antigravity aircraft, i.e. flying saucers) articles that appeared in the 50s and then quickly vanished from the public view:
http://file.scirp.org/pdf/IJG_2015042015204020.pdf
http://www.bibliotecapleyades.net/ciencia/secret_projects/project080.htm


Why did I create this thread? To compile evidence and allow for some speculation about the topic that, to my knowledge, was rarely broached anywhere.

So, /horror/, what do you know about this?