TwoWe have two directions in yaw, and we have two feet, so we can afford to have two pedals. makes sense - one for each direction.
One pedal? Theoretically, yes. You can imagine how unintuitivespring load that pedal to make it would beserve the purposes of both - press to have just one pedal for directional control. Imagine havingyaw left, release to think whetheryaw right, partially press to maintain heading. But I can imagine myself getting confused all the time - if I gotta turn left, do I press or release that one pedal just to be able? - not convenient when you need to turn in the desired direction! withmake a sudden input. With two pedals, you don't have to think - you simply press the controls are simplifiedpedal corresponding to your intended yaw direction. Single pedal creates more problems than it solves, and it solves none.