We all know an idea is worth nothing until it's turned into a product. Maybe Darwin didn't invent evolution but he turned it into a product (a book) and sell it

We all know an idea is worth nothing until it's turned into a product. Maybe Darwin didn't invent evolution but he turned it into a product (a book) and sell it to people. That's why the unknown farmer who maybe got the idea before him shouldn't be remember and we should remember Darwin forever.