If the ruler of this world really believes that earth's history repeats itself again and again, then I understand why the truth about prehuman civilizations are kept secret so tight.

There was no standard reference when the new era of a civilized mankind began. The founding fathers had been forced to start a new world order and as time passed by, many references appear.

This civilization is the impact of the world's consumption behavior.

There are many bizarre alien things at beyond and within the planet earth. The future of our civilization really depends on our willingness to mingle with them.

Science is a trigger of changes of civilization.
Religion is the failsafe of science performance.

Parents restrict their children accessing weird sites on the internet. Same reason, the ruler of this world restricts public accessing the sites of alien civilization everywhere.