Miracle 30 Million Years Ago
Mammals cannot see the color red. Dogs and cats cannot distinguish red from other colors than blue. However human beings and large-size apes can distinguish red.
It is because mammals were forced to live in hiding during the era of dinosaurs that continued for about 150 million years. In the era, mammals mostly in the shape of a kind of mice acted at night so as not to be attacked by dinosaurs. Accordingly, their eyes degraded. Mammals became only capable of making discrimination between red and blue; therefore every color except blue looked similar and every color except blue looked similar in a different way. Put simply they cannot tell difference between red and green.
However, 30 million years ago apes came to have ability to make color distinction based on perception of the three primary colors of red, green, and blue.
If this mutation evolution had not occurred, human beings could not probably produce civilization. Our intellectual ability is supported by our sensory ability to appreciate the blue sky, green leaves, and red flowers. If human beings could not see the world in its natural color, how could they establish civilization?
But as apes came to have the superior vision system, they could protect themselves more effectively from other animals. That is why human beings could pursue more evolution.
So, God destroyed dinosaurs 65 million years ago and restored faculty of sight of apes so as to pave the way for evolution of mankind.
However, it is said that dinosaurs could see things in color based on the four primary colors: red, green, blue, and ultra-violet. That maybe why they could rule the world dominantly from 200 million years ago to 65 million years ago when a gigantic meteor hit the earth.
Today birds, a kind of descendants of dinosaurs, have this tetrachromacy vision. It is even said that about 2 to 3% of women in the world have tetrachromacy vision, since it was females among apes that first captured the vision system based on the three primary colors 30 million years ago.
According to the Bible, people had ability to see ill spirits as well as angels. But as time went by, people gradually lost the ability along with development of material civilization. Or have most of people become a kind of ill spirits themselves so that they cannot any more discern ill spirits?
However, even creatures living in a monochrome world must be able to discern brightness of God.
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Mar 2:10 But that ye may know that the Son of man hath power on earth to forgive sins, (he saith to the sick of the palsy,)
Mar 2:11 I say unto thee, Arise, and take up thy bed, and go thy way into thine house.