For photosynthesis to proceed on a planet like Earth, sunlight (visual light) must penetrate the atmosphere all the way to the ground.
Words, even meaningless words, have the power to create their own virtual realities in our minds.
There are some biologists, such as Richard Dawkins, who still pin their faith in ideas which have resulted only in blankly negative experimental results.
Richard Feynman called 1/137, the fine structure constant, “a magic number that comes to us with no understanding by man.”
Our brains have actually shrunk by 10 percent over the last 40,000 years, coinciding with spectacular intellectual achievements.