Room 8 of 10
A different question changes the model
Our question
What becomes relevant when Sam asks about muffin stock?
Back at Harbor Coffee
For waiting, we need acceptance, readiness, and handoff times. For replenishing muffins, we may need stock, batches, spoilage, and deliveries. Leaving detail out for one question does not remove it from the real shop.
Models select boundaries. Moving Sam away from payments to pack food could move the queue to the register. Systems thinking helps examine those effects across the wider process.
Try a modeling decision
Switch the question without overwriting the waiting model.
Choose a view to see what it makes visible.
On the whiteboard
- Purpose → What becomes relevant when Sam asks about muffin stock?
Read the worked explanation
Keep both views with their purposes. Reuse shared meanings where they fit, and make changed boundaries explicit. A more detailed model is not automatically a more useful model.
Room not yet explored. Capstone progress is separate.
Inspect the source
Sam’s question
Participant accountsupportedCustomers tell us they wait too long in the morning. I want to understand what happens between taking an order and handing it over.
Purpose of this fictional discovery conversation.
Order #9821
Supplied recordsupportedOn September 15 at 10:15, Maria ordered a latte and a muffin.
Contents of one purchase. No waiting-time measurement was supplied.
Name the concept
Conceptual model: A purpose-driven representation of the important concepts and connections. A domain/logical view adds rules and detail; an instantiated view shows particular examples.