If they are here then they always have been seems logical to me also there will be many species. I don't get people who say they are waiting for us to develop or the nuke on Japan alerted them. If they wanted to take over they would do it when we are in a primitive state not wait for us to develop dangerous arsenals that we could turn on them with, theory Defies logic they are either here in numbers & therefore have the technology or they don't & we are alone. Personally I think they are everywhere & that's why we have a class system otherwise there is no benefit to keep lower classes of people. Everybody knows that a happy workforce performs better there isn't a logical reason to me that we would make a society with an elite class it's in no way beneficial to our species. It's not even beneficial to the elite if they are human because why would they wish to incite crime against themselves & that's the blatant result of making folk miserable they would just print more money & make everything go round. It's not like theres not enough food to go round the world it just isn't being distributed correctly everyone should have a bounty. No human would set it up like this so they have to be a different species lacking empathy for humans.