I don't know anything (or even much) about how our brains function, but the idea of a neuron sending an electrical output when the sum of the strengths of its inputs exceeds some value seems to be me like "a bunch of weights" getting repeatedly updated by stimulus.

To you it might be obvious our brains are different from a network of weights being reconfigured as new information comes in; to me it's not so clear how they differ. And I do not feel I know the meaning of the word "know" clearly enough to establish whether something that can emit fluent text about a topic is somehow excluded from "knowing" about it through its means of construction.