Re: Petty? "A hoover that used less power when it had less work to do is good idea."
Which is exactly what they made many years ago using a particle sensor to adjust the motor power.
It was the top of the range and thus expensive.
Didn't sell very well though, Dyson was really raking it in with "All of the power, all of the time".
Side note.
Before Dyson appeared on the scene (1970s sometime) the trade magazine ERT (Electrical and retail trade magazine) carried a full page advert from Hoover showing a treasure chest full of gold that told traders to stock up on the company's paper bags implying that great profits would be made by selling them (to us users of course).
Biting the hand that feeds IT
