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The impossible made possible

Most "impossibilities" in physics are really just very difficult engineering problems

By Michio Kaku   April 2008

When I was a child, I was mesmerised by Isaac Asimov’s Foundation books, which depicted the rise and fall of a galactic empire. They were set far in the future, when humanity has forgotten the planet it came from. Reading the novels, I wondered what technology might be like millennia from now. When people say something is “impossible,” what they usually mean is that it is impossible with the technology of today or of the near future.

Now that I am a professor of theoretical physics, I realise that many “impossibilities” may actually become possible in the future; there is…

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