And when they give fleeting acknowledgment to the idea that life on Earth has a history, they take pains to depict our understanding of that history as idle conjecture. In short, they present the living world in a way that has nothing to do with science but has everything to do with fundamentalism. The content is intolerably unbalanced. The writers use a style suggesting that students must be witless dolts. For example, puppies always look like small dogs.
Kittens always look like small cats.
But within each litter there are some variations. Some puppies may open their eyes before others. Some may grow faster. Some may have floppy ears. Some may have bigger feet.