The core idea
Time-series data can reveal whether a symptom follows weather, occupancy or equipment, but correlation still needs a plausible pathway.
How the mechanism works
Repeated measurements align variables over time and expose delays, cycles and exceptions.
When it becomes relevant
Typical trigger: Intermittent humidity, temperature, odor or moisture symptoms.
Evidence that supports this interpretation
- Events repeat with similar lag
- Control periods remain stable
- A mechanism explains the timing
Evidence that weakens it
- Only one event exists
- Clock or sensor drift is present
- Many untracked variables change together
What this concept cannot prove alone
A single observation, image or meter reading cannot confirm the complete failure pathway. Use this concept to form better questions, compare alternatives and decide which safe observation would be most informative next.
Safety and professional boundary
Do not infer causation from a coincidental graph without pathway evidence and competing explanations.
Primary references for this topic family
These references ground the general building-science or safety context. They do not diagnose a specific house, replace local requirements or certify a repair.
