Why Your AI Agent Breaks: A Diagnostic Framework for Product Managers
Many users think that context problems are about size.
Bigger window, better agent. Use the 1M token model, problem solved.
Wrong.
The problem is not how much fits, it’s what we put in, in what order, with what structure, and how often we update each part.
Andrej Karpathy explained it like this in June 2025:
Not all information. Not the most information. The right information.
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