The discipline of filling the context window with the right tokens at each step. Karpathy: "LLM as a new OS, context window as RAM."
Write / Select / Compress / Isolate. Lance Martin's four operations on context. Most "agent is dumb" complaints map to a failure of one of these.
Karpathy (June 2025) · Lance Martin's framework · Drew Breunig
Frame every agent debug session as a context-engineering audit using the W/S/C/I taxonomy.