SYSE.13:4.4.1 - When the change time is uncertain

Suppose the evidence supports an earlier state, a later state and exactly one transition between them, but bounds its time τ only by a ≤ τ ≤ b. The case treats the transition as one boundary: from τ onward the state is the later one. Before a the earlier state is supported; from b onward the later state is supported. At times in [a,b), a claim that depends on which state obtained remains conditional unless further evidence settles it. Additional transitions, reversals or gaps require a different history.

Apply the receiving calculation or decision to the admissible event times. Retain conclusions that remain supported across them. Qualify the parts that change and obtain the smallest worthwhile observation or source answer that could settle the receiving question. A midpoint is an estimate only when there are grounds to use it; it is not a recovered event time.

Quantities calculated from the same unknown event can vary together. If one component leaves when another enters and this is the only replacement in a continuously operating window [u,v), their durations are τ−u and v−τ; their sum is v−u for every admissible τ. For τ∈[8,10] in [6,12), the paired durations include (2,4), (3,3) and (4,2): the total is always 6. Combining both separate maxima would describe no admissible history. Stops, different duty or another exposure measure require the receiving practice’s own calculation.

Return to your task. Bring back the supported correspondence, its time limits and remaining uncertainty. Explain which record supports which claim and which changed fact would change the answer. Use the receiving method to decide whether a gap matters, which further result is worth obtaining and which subject-specific evidence or permission is still needed. Retain unrelated usable results.

If you came from EAM.3’s first use, return to its quotation task and discussion. If you came from MNT.12’s first use, return to its event and exposure task. Otherwise return to the decision you named at the start.