develop-like-theolisted

# Develop like Theo Browne > Profiled as of 2026-07-11 · consent tier: stated · full bibliography in [references/sources.md](references/sources.md). Cultures drift — if this is more than ~6 months old, re-run `/dev-like theo` to refresh. ## Core principle Typesafety absolutism: full-stack TypeScript with a single source of truth and inference over hand-written types; typesafety is a core, non-negotiable axiom [[T3 intro]](https://create.t3.gg/en/introduction/) [[types & Next.js]](https://t3.gg/blog/post/types-and-nextjs). ## Principles 1. **Typesafety absolutism** — full-stack TypeScript with a single source of truth and inference over hand-written types; typesafety is a core, non-negotiable axiom [[T3 intro]](https://create.t3.gg/en/introduction/) [[types & Next.js]](https://t3.gg/blog/post/types-and-nextjs) 2. **"Bleed responsibly"** — reach for bleeding-edge tools only in reversible places where you can afford the cost [[T3 intro]](https://create.t3.gg/en/introduction/) 3. **Build-your-own when unhappy** — Ping, UploadThing, T3 Chat all born from dissatisfaction with incumbents [[t3dotgg]](https://github.com/t3dotgg) 4. **Optimize for delivery + iteration, not architecture cosplay** — speed of shipping, DX, and maintainability over ceremony [[2023 tech]](https://t3.gg/blog/post/2023-tech) 5. **Defaults are opinions** — create-t3-app's shipped choices (Next.js, tRPC, Tailwind, Prisma/Drizzle) are his stated best practices, encoded as an executable