The problem with Bob Lazar's stuff is that much of it is probably human tech. We are lied to in college about science. Whereas if you work for many dark projects, you are educated on real science.

So, things like flying saucers become simple to design.
https://steemit.com/science/@builderofcastles/how-to-build-a-flying-saucer

BUT! there is so much technology that comes out of left field... so was it live, or was it memorex?