This is exact deterministic line-capacity arithmetic, not a queueing or scheduling proof.
highlighted = computed this step
Deterministic Snapshot
The calculation uses fixed step rates and a fixed demand rate.
base capacity=20what-if capacity=24
Honesty Note
This is deterministic line-capacity arithmetic only. It does not model variability, queues, downtime, setup losses, quality defects, staffing, batching, or scheduling.