What happens to me — the physician, the surgeon, the person who has spent forty years inside the system — while AI compresses a century of medical progress into a decade? A terrain map, in the spirit of Dario Amodei's 'Machines of Loving Grace' and drawing on the DeepMind documentary 'The Thinking Game.
Read articleLesson 8 of Learning With Dr Neal — the capstone. Build a working retrieval assistant over a folder of your own documents: local embeddings, the twenty-line retriever, grounded answers with citations, and an honest recall@k evaluation that will teach you more about deployed clinical AI than any product demo ever will.
⏱ 40 min Read articleLesson 7 of Learning With Dr Neal. The assistant from Lesson 6 knows nothing about your hospital's guidelines, your patient's notes, or anything published since its training data was collected. Closing that gap without retraining is the job of embeddings and retrieval — turning documents into geometry, searching by meaning, and grounding answers in sources you control.
⏱ 30 min Read articleLesson 6 of Learning With Dr Neal. The raw next-token predictor you trained in Lesson 5 is the 'before' picture. This is the 'after' — instruction tuning, feedback-based refinement, why the same weights can host such different behaviours, and what the post-training pipeline means for the failure modes you'll meet in deployed clinical tools.
⏱ 30 min Read articleLesson 5 of Learning With Dr Neal. Stop reading and train one: take the TinyGPT from Lesson 4, feed it a corpus small enough for a laptop, write the training loop with your own hands, and watch generated text condense out of randomness — from noise, to word-shaped noise, to sentences.
⏱ 35 min Read articleLesson 4 of Learning With Dr Neal. How a language model actually turns a transcript into the next token: tokens and embeddings, why attention was the breakthrough, what a context window physically is — and a complete tiny GPT in PyTorch, small enough to read in one sitting and train on your laptop.
⏱ 35 min Read articleLesson 3 of Learning With Dr Neal. What separates a chatbot from an agent, the six building blocks every production agent shares, how a single request travels from your keystroke to the final answer, and how a permission system keeps an autonomous loop from wrecking your machine.
⏱ 30 min Read articleMemory and storage stocks have moved more than a thousand percent in the past year on the back of an AI-driven chip shortage, and the sector just took its sharpest pullback since the rally began. A full tour of SanDisk, Western Digital, and the semiconductor stack behind the AI boom — and why Dr Neal thinks this dip is the entry point, not the exit.
⏱ 24 min Read articleCASGEVY proved CRISPR could work as medicine. Three years later the harder question is whether it can work as a business. A deep dive into Vertex Pharmaceuticals, CRISPR Therapeutics, and the genomic medicine sector — the science, the pipeline, the balance sheets, and a full year of stock chart data.
⏱ 22 min Read article