# Skills, MCP, RAG, and Memory: The Four Ways AI Agents Actually Learn Things
This story is from 2026-09-27. It is preserved in the archive; the latest stories are on the live feed.
Why "just add more context" isn't a strategy — and what these four building blocks are really for Every language model, on its own, only knows what was in its training data. It has no access to your company's HR system, no memory of yesterday's debugging session, and no idea how your team likes a 5…
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- 2026-09-27 00:23 · DEV Community — AI
# Skills, MCP, RAG, and Memory: The Four Ways AI Agents Actually Learn Things