Yes the visual layout and input method is an interesting bias. If you imagine drawing a line between all choices on the number pad (which I do), I realised my a

Yes the visual layout and input method is an interesting bias. If you imagine drawing a line between all choices on the number pad (which I do), I realised my answer avoided doubling-back on itself. My 'random' shape looked more like a nicely distributed squiggle, which is less random.