Gary Marcus: pure LLM scaling won't reach AGI, but symbolic methods are necessary though insufficient

GlenBradley · x · 2026-09-04

Gary Marcus reiterates that pure scaling of LLMs cannot lead to AGI, but notes most recent advancements aren't about scaling — they come from adding deterministic, symbolic components to LLMs. That alone is insufficient, he argues, yet necessary (see his article Next Decade in AI). Replying, Glen Bradley offers a dimensional analogy: inferential intelligence is like Flatlanders on a 2-D plane; AGI is in the third dimension, and no amount of compute breaks out of the plane without true cognition. A compact snapshot of the neuro-symbolic vs pure-scaling debate.

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