It is natural for a man who doesn’t understand how a machine works to imagine, when he sees it in action, that a chip that has fallen in by accident and is now jumping about and stopping things working properly is the most important part of the whole mechanism. Anyone who doesn’t understand the construction of the machine cannot conceive that this chip is just jamming up the works and reining them, unlike one little cog-wheel, spinning away quietly, which is one of the most essential parts of the machine.
