10 Questions for James Dyson

Inventor and billionaire James Dyson on why he likes rookie engineers and air dynamics but not Harry Potter

David Johnson for TIME

Inventor Sir James Dyson.

Having made vacuum cleaners, hand dryers and fans, you've now made a vacuum mop. Why would anybody pay $330 for a mop?
The problem with mopping is you have to get out a vacuum and then you get out the bucket and mop, two quite big processes. What we've done is to have it all in one with this cordless, very powerful electric motor we've been developing over the past 15 years. It's four times faster than any other electric motor and very light. I hate the word innovation, but it's a breakthrough.

All your products are about air dynamics....

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