What's the Critical Thinking Error?

Bob Greene: Can you identify some kind of intellectual error? And tha leain too granularly, what do you mean by that? Well, i mean, we share jeans with li squid and other and other animals. It's not a great example of it, but i think it's the orof what their error is. The weird thing is, it sounds like the question came from a different person than the previous explanation. He says they're making an essentialist, miss alguo, essentialistst essentialism is when you think of categories as discreet entities.