One path through modern AI — twenty articles, beginner to frontier.https://datascienceorigin.com/https://datascienceorigin.com/articles/world-models-and-physical-ai/https://datascienceorigin.com/articles/world-models-and-physical-ai/From predicting text to predicting the physical world — what world models are and why robotics needs them.Mon, 18 May 2026 00:00:00 GMThttps://datascienceorigin.com/articles/running-frontier-models-locally/https://datascienceorigin.com/articles/running-frontier-models-locally/The hardware and quantization tradeoffs for running capable models on your own machine.Mon, 11 May 2026 00:00:00 GMThttps://datascienceorigin.com/articles/small-models-beating-giants/https://datascienceorigin.com/articles/small-models-beating-giants/How distillation and better data let small models match frontier models on narrow tasks.Mon, 04 May 2026 00:00:00 GMThttps://datascienceorigin.com/articles/the-inference-cost-collapse/https://datascienceorigin.com/articles/the-inference-cost-collapse/The hardware, algorithmic, and market forces that drove inference prices down, tracked with dated sources.Mon, 27 Apr 2026 00:00:00 GMThttps://datascienceorigin.com/articles/mixture-of-experts-and-hybrid-architectures/https://datascienceorigin.com/articles/mixture-of-experts-and-hybrid-architectures/Why sparse activation lets models grow without growing inference cost at the same rate.Mon, 20 Apr 2026 00:00:00 GMThttps://datascienceorigin.com/articles/fine-tuning-vs-prompting/https://datascienceorigin.com/articles/fine-tuning-vs-prompting/A practical decision framework for when to fine-tune, when to prompt, and when to do both.Mon, 13 Apr 2026 00:00:00 GMThttps://datascienceorigin.com/articles/rlvr-reinforcement-learning-from-verifiable-rewards/https://datascienceorigin.com/articles/rlvr-reinforcement-learning-from-verifiable-rewards/How training against checkable answers, not human preference, produced today’s reasoning models.Mon, 06 Apr 2026 00:00:00 GMThttps://datascienceorigin.com/articles/agent-security/https://datascienceorigin.com/articles/agent-security/How agents get hijacked, why tool use makes it worse, and the defenses that actually hold up.Mon, 30 Mar 2026 00:00:00 GMThttps://datascienceorigin.com/articles/harness-engineering/https://datascienceorigin.com/articles/harness-engineering/The tools, permissions, and guardrails that turn a capable model into a trustworthy agent.Mon, 23 Mar 2026 00:00:00 GMThttps://datascienceorigin.com/articles/evals-as-governors/https://datascienceorigin.com/articles/evals-as-governors/Treating evaluation as a live control system, not a one-time test suite, for agents that act in the world.Mon, 16 Mar 2026 00:00:00 GMThttps://datascienceorigin.com/articles/multi-agent-orchestration/https://datascienceorigin.com/articles/multi-agent-orchestration/When to split one agent into many, and the coordination patterns that keep multi-agent systems from thrashing.Mon, 09 Mar 2026 00:00:00 GMThttps://datascienceorigin.com/articles/the-agent-loop/https://datascienceorigin.com/articles/the-agent-loop/Model, tool, result, repeat — the loop underneath every agent framework, stripped of marketing.Mon, 02 Mar 2026 00:00:00 GMThttps://datascienceorigin.com/articles/embeddings-and-vector-search/https://datascienceorigin.com/articles/embeddings-and-vector-search/How meaning becomes a vector, how nearest-neighbor search works at scale, and where it quietly fails.Mon, 23 Feb 2026 00:00:00 GMThttps://datascienceorigin.com/articles/agent-memory/https://datascienceorigin.com/articles/agent-memory/The three tiers of memory production agents actually use, and when each one is the wrong choice.Mon, 16 Feb 2026 00:00:00 GMThttps://datascienceorigin.com/articles/rag-done-right/https://datascienceorigin.com/articles/rag-done-right/Why naive retrieval crowds out the signal, and the precision-first patterns that keep it from backfiring.Mon, 09 Feb 2026 00:00:00 GMThttps://datascienceorigin.com/articles/model-context-protocol-explained-by-building-one/https://datascienceorigin.com/articles/model-context-protocol-explained-by-building-one/How tools connect to models — write your first MCP server and see the handshake end to end.Mon, 02 Feb 2026 00:00:00 GMThttps://datascienceorigin.com/articles/context-engineering/https://datascienceorigin.com/articles/context-engineering/The four-layer stack production agents assemble on every call.Mon, 26 Jan 2026 00:00:00 GMThttps://datascienceorigin.com/articles/reasoning-models-how-thinking-tokens-work/https://datascienceorigin.com/articles/reasoning-models-how-thinking-tokens-work/What a model is doing when it emits a chain of thought, and why that changed what these systems can solve.Mon, 19 Jan 2026 00:00:00 GMThttps://datascienceorigin.com/articles/attention-and-transformers-explained/https://datascienceorigin.com/articles/attention-and-transformers-explained/The mechanism that let models look at an entire sequence at once, and why it replaced everything that came before it.Mon, 12 Jan 2026 00:00:00 GMThttps://datascienceorigin.com/articles/what-actually-happens-inside-an-llm/https://datascienceorigin.com/articles/what-actually-happens-inside-an-llm/Tokens, embeddings, and next-token prediction — how a language model turns text into math, explained without the hype.Mon, 05 Jan 2026 00:00:00 GMT