As technologically advanced we are now, human civilization still has a potential to grow. However, I believe we have a reached a stagnant phase for the past couple of decades or so. Nothing much has changed dramatically, but changes are apparent in slow increments. For example, the idea of a self-driving car was known to me in 2009 (5th grade), but was fully functional and released in 2017. This leads me to believe if the government has enough knowledge to advance civilization, but are only doing it slowly.
This idea came to me when I watched the movie "Predestination." Just to give a basic gist of the movie its about a company who uses time travel to combat the death of massive amounts of human individuals. Time travel was invented in 1945 according to the movie as well.
So what if something similar to time travel was already created, but it was kept in secrecy for obvious reasons (abuse) and to prevent the complications that can arise because of it. Not only time travel, but other advanced objects such as crafts, intelligent life forms, etc. can all be hidden in Area 51. Everyone knows about this place, yet no one knows anything that happens inside of the place. There have already been countless speculations, videos and articles discussing what happens inside this facility.
Instead of discussing all the conspiracy theories and baseless "facts" behind the secrecy of Area 51, I will discuss what the future of humanity will hold because of these developments. First, I propose a question. Does it not seem strange that human civilization have advanced so dramatically? Humans have grown from eating raw meat to communicating audibly to creating iPhones. I believe human civilization has been given a set of guidelines to follow with each coming generation. Whether that be creating the first steel sword, gunpowder or airplane, most of these items have already been created in the past or has been passed down to us from something or someone. Basically, what I'm trying to say is that the life we live right now with all the technology and items in the world have been created before. Why do you ask would human civilization repeat itself?
I believe it is solely to protect the human race from extinction. As technology grows more and more advanced we face the risk of the annihilation of Earth and the human species. Take atomic weapons for example. They have become the center of news and worry for global nations and leaders. Thus, as technology grows and weapons of mass destruction become more readily available to countries, the threat of warfare is probable.
Therefore, by resetting human civilization to the Stone Age, allowing 1 or a few humans with the knowledge of past accomplishments, human and human nature can preserved. Instead of fighting against one another for conquest, people can start anew and work together by gathering food, building shelters and restore the former glory of the human civilization. I believe this reset of human civilization is done with the hope of less devastating wars and conflict and reset will only stop once we reach a state close to a utopia.