Okay, it was Fitzroy.
The point being, most of Darwin's ideas were either simply not new or outright plagiarized.
In his travels, he noticed finches had different traits based on where they lived on the island. Stuff like that. The problem is, this is already a theory. Geoffroy Saint-Hilaire found that an island that got separated by some disaster, two different species developed. This theory, known as saltationism, held that environmental factors produce changes. In other words, nothing about this trip showed any signs of "natural selection" but plenty about it showed that Geoffroy was right. In addition, Darwin lifted some of his theories from Darwin (his grandfather, Erasmus Darwin) and some from Lamarck, and some from others like Robert Chambers, Patrick Matthew, Edward Blyth, Alfred Russel Wallace, and many others. He was basically a no-talent hack.
‘ … creationists propounded a “creation model” of the origins of life on earth. Their story was based on a literal understanding of the book of Genesis. … The trouble with this proposal is that it was abandoned, for excellent reasons, by naturalists, virtually all of them extremely devout, decades before Charles Darwin wrote The Origin of Species.’
So now what about his "survival of the fittest" theory. Who are the fittest, anyway? The biggest and strongest? The ones with the biggest antlers would seem to be the alpha of the species, able to get all the lady deer they want. Only, that one gets their antlers stuck in trees and doesn't get away in time to avoid being hunted. What happened with the Megaloceros giganteus
, it was a big alpha buck that can't survive well after forests cover the land post-Ice Age. We have no idea whether survival of the fittest even works.
Anyway, animals cannot compete for survival, and expect to survive as a species. Why not? Suppose a volcano erupts. You could go "every man for himself" and try to outrun the volcano. It's an island, and the waters are shark infested. You die. So do alot of people. Or you work together to dig trenches and drive the lava into the sea and away from town. This is the point of things like wingman. Human beings looking out for each other, to help the person procreate, because scoring a hot girl is good for the survival of the species. Natural selection is not natural, and does not secure a species will survive. In fact, traits we think are wonderful, that we breed for (genetics and eugenics schemes) might actually create problems similar to the buck with enormous antlers. Nash observed this from a bar in A Beautiful Mind
: there's a hot blond girl and a few other women, and like guys (besides Nash). In the competition scenario, the guys fight over that one woman, it creates a scene, and the other women leave because they are second choice. At best, one man gets the woman, if she also doesn't leave. This "selection" is not natural, and helps nobody. What Nash proposed should be done instead is ignore
the blond, and go after the other women, each picking one they want.