We can't fault Dyson for chutzpah. After putting the company's spin on vacuum cleaners and then hand dryers, we probably should've guessed that a revolution in table fan engineering was next up. When we first saw an image of the Dyson Air Multiplier "bladeless fan" a few spurious theories popped into our heads as to how it works, but it didn't take long to figure it out: it has blades in it. It's just that these blades are inside the lower canister, rather similar to, dare we say it, how a vacuum cleaner is set up, with the air then routed through the ring up top. The benefits of this tech are that there are no nas