---
title: Trigger Surface
description: "### Definition borrowed from systems engineering and may carry too much external register Open Questions: - Lock decision: promote, hold, or retire. Workshop Trail: ### Explanation Locked at the definition layer. Full explanation pending workshop pass."
url: "https://kb.jeffreysummers.com/docs/trigger-surface/"
updated: "2026-08-13"
category: "The Operator's Dictionary"
---

# Trigger Surface

### Definition

borrowed from systems engineering and may carry too much external register Open Questions: - Lock decision: promote, hold, or retire. Workshop Trail:

### Explanation

Locked at the definition layer. Full explanation pending workshop pass.