Building a Brain in Pure Python
This post originally appeared on Medium . Cross-posting it here for the dev.to community. Six months ago I gave myself a challenge: build the entire p…
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I ran an fMRI on LLMs: a concept is a direction, not a region
TL;DR I've been running an "fMRI for LLMs" — capturing the full internal activations of dense open models (Qwen2.5-7B, Gemma-2-9B, Gemma-4-12B) and ap…