There was still active research into why bicycles are stable as recently as 2011. Here's a talk about that research: https://youtu.be/YdtE3aIUhbU https://youtu.

There was still active research into why bicycles are stable as recently as 2011. Here's a talk about that research: https://youtu.be/YdtE3aIUhbU https://youtu.be/YdtE3aIUhbU If the bicycle was some sort of "obvious" machine, people wouldn't still be studying the basic stability mechanics 200 years later. Very few things are as simple as they seem. Even levers can get a bit complicated.