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6 min read AI Leadership

The Third Brain — My Cognitive Partnership with AI, One Year Later

A year ago, I described AI as a second brain — a place to store and organize thinking. What I’ve built since is something different: a cognitive partnership with memory, challenge, and reciprocity. Here’s what changed, what I got wrong, and the risks I still can’t name.

The Third Brain — My Cognitive Partnership with AI, One Year Later