[philman_36]

The upper levels have higher IQs and more education and tend to associate and marry those within their group who pass on the elements of success to their children, including intelligence while the lower level does the same.

Shades of Methuselah's Children.

[philman_36]

Are we alone ?
No.

If people read and understood the Bible that question would never have been asked. We're not alone on Earth, much less in "space".

2 Kings 17 And Elisha prayed, and said, Lord, I pray thee, open his eyes, that he may see. And the Lord opened the eyes of the young man; and he saw: and, behold, the mountain was full of horses and chariots of fire round about Elisha.

The blind are still blind.

18 And when they came down to him, Elisha prayed unto the Lord, and said, Smite this people, I pray thee, with blindness. And he smote them with blindness according to the word of Elisha.