a good example would be a road. Imagine trying to travel down to London on a single lane road. There is nothing wrong with the road, it just can't handle the amount of traffic on it. So we built a motorway with 4 lanes to allow greater throughput and relieve the pressure. Everyone now travels at 80mph down 4 lanes instead of being stuck in a traffic jam at 10 mph.
There is nothing wrong with the equipment they are using, they just need more of it to cope with the traffic
