Joe Triano, the carpenter, was banging away in the kitchen. He was completing the framing work, nailing the new studs to the ﬂoor and ceiling joists. Delivery of the Anderson casement window was expected any day. The new bay window would ﬁt snugly into the hole Joe had created in the framing. The supply chain architect and Tom, the building architect, were trying to hold a conversation in the far corner of the room between the blows of Joe’s hammer. It was practically impossible.