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Don't be fooled–LLMs don't reason

75 points · 159 comments · leopoldj

  1. f6v · · focus · HN ↗
    > Knowledge and reasoning are inextricably interwoven in the weights of the neural network—there is no independent, explicitly represented set of beliefs.

    I'm not sure I understand this. Do we have evidence humans have an independent set of beliefs not shaped by knowledge and reasoning? If so, where do these come from?

    I'm especially confused about a prior statement as a scientist:

    > Three shortcomings prevent what chatbots do from qualifying as reasoning (in a way that a scientist might recognize).

    How does a set of beliefs help with reasoning?

    > Third, while the chains of thought chatbots produce look like deliberation, research has demonstrated that the bots often concoct them after the fact, reaching an answer by one route but reporting another.

    We also often do the same as humans.

    1. imightbebatman · · focus · HN ↗
      Yea.

      I think a better argument for them not reasoning is that they are incapable -- seemingly, for now, that I know of -- of independently starting a reasoning task.

      They do not ask whether or not they dream of electric sheep. Unless prompted to do so.

      That's part of human reasoning, being prompted, but so is independent thought.

      So at best they are partially reasoning, unless we philosophically argue these are two separate things. And frankly, shrug, I'm not a philosopher.

      1. f6v · · focus · HN ↗
        I think you’re on the right path. My first thought was whether lack of constant sensory input is an issue. We’re always feeling something (save for sensory deprivation chambers, but even then…)

        Or put it other way, lack of feedback loops between the “brain” and the environment.

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