A weighted location estimate is not a complete network optimum

A fictional distribution exercise supplies three demand points and shipment weights for a center-of-gravity calculation. The learner correctly computes the weighted coordinate average, but the model contains no road network, permitted site locations, warehouse fixed costs, capacity constraints or service-time evidence. A colleague proposes describing that coordinate as the guaranteed optimal real warehouse site. Another separates the bounded formula result from the broader location decision. This written case signs no lease, moves no inventory and changes no route. It asks why correct arithmetic can remain an incomplete design answer and what actual constraints would need to be considered before an authorized recommendation.