Right, and now you're using the argument of the top level comment. Look at the port. Is ingress consistently larger than egress? Then limit ingress. Now look

Right, and now you're using the argument of the top level comment. Look at the port. Is ingress consistently larger than egress? Then limit ingress. Now look at the ocean. Is ingress consistently larger than egress? Then limit ingress. Now look at the exporting ports. Is ingress consistently larger than egress? Limit ingress. Now look at trucks going to the port. Is ingress consistently larger than egress? Limit ingress. Now look at the factories that load trucks. Is ingress consistently larger than egress? Limit ingress. ---- Back pressure builds on looking at one queue and asking if arrivals come faster than departures go -- exactly what the top-level comment suggested.