"Myers contends that, when applied to plants, patents are stifling. They discourage sharing, and sharing is the foundation of successful breeding. That’s because his work is essentially just assisting natural evolution: He mates one plant with another, which in turn makes new combinations of genes from which better plants are selected. The more plants there are to mix, the more combinations are made, and the more opportunities there are to create better plants. Even some breeders who work for the companies that are doing the patenting still believe in—indeed, long for—the ability to exchange seed.