"Another joke he like to tell involved the wireless telegraph: 'at the beginning of the twentieth century, someone asks a physicist at a party; can you explain how it works? The physicist replies that it is very simple: first you have to understand how the ordinary, wired, telegraph works: imagine a dog with its head in London and its tail in Paris. You pull the tail in Paris, and the dog barks in London. The wireless , says the physicist is the same thing without a dog."
Keep thinking this story can be applied to different situations too.
