MDJ Studios

Field notes on agentic AI, engineering, and teaching

Deep dives on building production AI agents with the Claude Agent SDK and MCP, full-stack engineering with Next.js and TypeScript, and the craft of teaching technical subjects.

Subscribe via RSS

Dan Scott in a navy blazer against a dark studio background
6 min read

Same email. Two ways to ask for help

Chat AI waits at the desk until you walk over. An agent keeps a saved job running and only knocks when it needs a yes.

  • Agentic AI
  • Teaching
An attention diagram showing how the word 'sat' attends to 'cat' and 'mat' most strongly in the sentence 'The cat sat on the mat.'
5 min read

Transformers, as I teach them

Strip away the math and what's left is surprisingly clean. Here's the mental model I use when I teach transformers, the architecture behind every modern LLM, to students who've never written a line of machine learning.

  • LLMs
  • Teaching
  • Machine Learning