In A Textbook Case Revisited – Knowledge as a Mode of Existence, the author discusses how scientific theory evolves just as animals do. He takes horses as an example. Throughout evolution these animals have evolved to have fewer toes and longer teeth. Simultaneously, human thought concerning their evolution has also developed over a span of time. Humans once thought that horse evolution (or all evolution in general) progressed in a linear fashion, with one horse species coming after another in a sequential fashion. We now know better - that evolution takes place in a much more dynamic and complicated way. For instance, evolution can be seen as a tree, with base species that branch - forming different sub species. This is an idea that is much more intricate and developed than we once previously thought. I also found the idea of scientific theory evolution interesting because most people accept what the scientific community has to say as the absolute truth. But the real fact of the matter is that the science can never really offer any absolute truths on any subject, something most people don't understand. The population needs to take into consideration that theory is evolving just like everything else is and that new theories are constantly changing and being updated to reflect the current research and ideas. But, that doesn't mean that any theory is absolutely true, it just means that we think it to be true based on everything we know. That is, human theory is just based on what we think we know: relating one supposed truth to another supposed truth. Once humans break out of this cycle, we shall discover that there can be no absolute truth in science and that everything we hear should be taken with a grain of salt.