That's because the supply chain is as immeasurably complex as the real world. Does your model account for the fact that the polish or german government decided

That's because the supply chain is as immeasurably complex as the real world. Does your model account for the fact that the polish or german government decided to institute border controls and now there is a 40 mi backed up line of trucks delayed? Does it consider the cascading effects of polish truck drivers being unavailable for 14 days of quarantine if they cross into Poland for non-work reasons?