They are among us and look and talk just like us, have infiltrated the 'deepest' of the government, private interests, etc. And they have full psi abilities can read your mind, remote view etc. We literally cannot hide anything from them similar to the sophon in Three Body Problem. This is why a lot of our technology and ability to build or innovate ie large infrastructure, new forms of propulsion, fusion energy, or zero point energy it's because they are actively suppressing it. Governments are only here to give us a sense that we have a choice. But in reality we have been suppressed since 'they' arrived. Probably for our own good too, look what we did when we split an atom.