Many (most) plants are toxic or inedible to humans. But the plants are poison idea ignores a very important point - that we eat the parts of plants that have

Many (most) plants are toxic or inedible to humans. But the plants are poison idea ignores a very important point - that we eat the parts of plants that have evolved to be eaten, by us and other animals. For the most part we eat only the seeds and fruit, and we help spread them in an almost symbiotic relationship.