What fearful symmetry... In a paper entitled, It Takes Two Neurons To Ride a Bicycle, Matthew Cook mapped the path of 800 unmanned bicycles until they fell over.

https://twistedsifter.com/2020/11/paths-of-800-unmanned-bicycles-being-pushed-until-they-fall-over/

http://paradise.caltech.edu/~cook/papers/TwoNeurons.pdf