The agnostide were extinct animals that lived in the Ocean and were ancestors of current insects.

The agnostide were extinct animals that lived in the Ocean and were ancestors of current insects. The article proposes three hypotheses about the way they lived and use various examples and motives to illustrate them. On the contrary, the professor cites several examples and reasons to reject the points in the reading. First, the writer explains they possibly were hunting smaller species, due to the fact, there were other arthropods that were hunters. In contrast, the professor asserts all hunter arthropods were large and their vision was progressive because they should be able, in spite of the agnostic poor vision. Second, the writer claims they may have lived on the seafloor. There are other ancient arthropods, whose seafloor were their habitats. They could feed on dead organisms or bacteria. Conversely, the lecturer points out all seafloor dwellers are slow, however, arthropods are able to move rapidly. In addition, it is unusual that the animal with the ability to move fast live on the seafloor. Finally, the reading suggests they probably were parasites. To be more specific, they feed on the live animals. The modern arthropods that are parasites support the idea. On the contrary, the professor mentions the parasite population is small, in fact, if their population is enormous, they kill their host soon. The arthropods lived in big groups, as a result, they could not be parasites. In the conclusion, the writer puts forward three theories to describe the approach of agnostids living, Conversely, the professor opposes the proposed idea using an array of reasons and examples.