Human progress, Earth's future could be related to UFOs

Have we acquired advanced technologies from contact with extraterrestrials? Many credible researchers who have looked into the general topic of alleged UFO incidents and evidence say the answer is yes.

Although average people might conclude that Earthly human consciousness might not be ready for more advanced technological knowledge, it could be the case that we are already engaged in this expansion of our understanding.

If certain elements of governmental defense, intelligence and scientific communities have already obtained some of this advanced technology, what have they done with it?