Radical space technologies never reach the public because unknown groups do not wish humanity to have access to the highest knowledge or the most advanced scientific inventions. Perhaps this suppression is out of fear that the masses may be able to explore our Solar System and the Universe beyond it. Whatever the case, it seems they want us to stay at ignorant levels forever.
Takaaki Musha, The Orphan Conspiracies: 29 Conspiracy Theories from The Orphan Trilogy
space, space-exploration, space-travel, suppressed-science, technology