Dyson's true discoveries are to find people predilected to believe silly things and spend lots of money on fads. He claims his vacuum cleaners produce more "suction". The vacuum of any air-moving machine is limited by the natural air pressure, not by a fancy impeller design. It's like making an empty bottle more "empty". My grandma's Kirby from the 1950s produced just as much "suction" as a Dyson, and it had a metal housing that you could hit with a cannonball with no dent.
Now Dyson would have us believe that he has done what no one else in any company has been able to do for 50 years with the hairdryer. What he does with it is akin to putting gold-plating on a dump truck. The non-plated version does the same job for a whole lot less.