Engineering field notes from the intersection of physical business operations, deterministic prompt architecture, and serverless edge computing.
By Jack Lorraine — Founder, Arbor Mac Repair & Principal, LorraineCo.
Operating out of downtown Chicago, IL.
Why conversational chatbots fail in real-world business operations, and how to engineer deterministic prompt pipelines, structured schemas, and autonomous edge state machines that run physical companies.
Read Field Note→Three axioms governing our engineering and operational deployments:
Conversational chat is an operational failure mode. Real businesses require strict JSON schemas, negative constraints, and typed state transitions.
Replacing $500/mo in fragmented SaaS tools (HubSpot, Zapier, Jobber) with distributed V8 isolates, serverless SQLite (D1), and Workers AI running globally in sub-10ms.
Never theoretical. Every agentic pipeline and prompt state machine is actively battle-tested under the physical realities of Arbor Mac Repair on Michigan Ave in downtown Chicago.
Jack Lorraine accepts a strictly limited number of private architectural advisory and prompt-engineering engagements each quarter for operators modernizing complex systems, eliminating SaaS bloat, or deploying autonomous edge intelligence.
No retainers. No commodity web design. Inquiries are reviewed directly by Jack.
Inquire Privately (jack@lorraine.co)→