Was stamping dirt to form the foundation of my log cabin when I had one of my rare insights.
Why can't we hitch bulls to our plows?
The mechanics for hitching animals to things already exists and it'd give cattle owning communities a edge over those lazy stick farming peasants. And would increase cattle value as a commodity rather than just chorizo stuffers on legs. (Or in addition to being jewelry's bottleneck, a source of poor leather, or milk factories, or a harrowing brown mooing menace that devours everything in its path.)
Just thought it'd be neat.
Discuss.
*edit: Okay, I admit I've been playing KoDP and now got a weird obsession with cows.