"Truth is one; the sages just speak of it in different ways."
Washers and Dryers
Is there a reason that washing machines usually are started by pulling a knob out, while dryers are usually started by turning a knob? Even when you get a twinned set from one manufacturer, the interface to starting the washer is different from that of starting the dryer. Is there something about washing machines that makes them naturally a "pull-the-knob-to-start" sort of machine, while dryers are characteristcally "turn-the-knob-to-start" devices?