DavidKPiano: 'Deterministic core, agentic shell' — stop building your app in a system message
DavidKPiano · x · 2026-10-14
Developer David Khourshid (DavidKPiano) endorses a 'deterministic core, agentic shell' architecture, answering fears that labs will absorb the new possibilities opened by Jev.
- AI (system one) + software (system two) is irreversible; you control the software, and AI can't beat the efficiency of this combo
- You don't need to send model providers your whole program logic
- He calls the 'wrapper app' era some of the darkest days in software: people did all their programming in a system message and shipped it to a third party incentivized to bake that behavior into first-party products
- Takeaway: keep deterministic logic in your own codebase and treat AI as the agentic shell around it
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