Even the Little Parts are Necessary

One could imagine a comparison between a car’s oil drain plug and its electronic ignition system. One is as low-tech (and unimpressive) as could be, while the other is highly sophisticated. But a car won’t last long without its oil drain plug no matter how impressive its ignition system! The various hoses used to deliver fuel or other fluids from one part of the car to the places where they are needed are not impressive or technological wonders, but it would be ridiculous to think that the car could get along without them. As [David] Garland says, ‘The failure of one little valve can shut…