Honest Value-Stream Scope - Value Stream Maps: Lead Time, Step by Step

The final lesson states the boundary: this is deterministic snapshot arithmetic.

highlighted = computed this step

Snapshot

The map is one deterministic snapshot.

\text{one deterministic snapshot}

Not queues

It does not model stochastic queues, staffing, or scheduling.

\text{outside scope: stochastic queues and staffing}

Not an improvement proof

It does not prove a lean improvement.

\text{not an improvement proof}

Honesty note

This is deterministic value-stream snapshot arithmetic. It does not model stochastic queues, staffing, scheduling, batching, rework, or proof of lean improvement.

\text{deterministic value-stream arithmetic only}