# 07. When to update lighting

Editorial teaching text. Check scientific claims against the cited primary sources; the project framework is identified in the text.

The lamp still works. Is that enough to keep it? First ask what has changed: output, flicker, appearance, operating conditions or the person’s task.

Replacement decisions consider quality, repairability, available improvements, operating cost and waste. Energy comparisons require a comparable lighting service. A universal replacement interval needs its own justification.

## Key idea
Record a verifiable reason for each update.

## Human practice
Describe one real situation related to this topic. Separate observations from assumptions and list the evidence needed to check them.

## Agent assignment
Prepare an inspection plan. State which findings would trigger cleaning, repair, adjustment or replacement.



Light Academy · 1.5.0 · 2026-09-17