I came here to (wrongly) say that wooden disks were never used as wheels, and that ot all started with spokes. Some checking showed that, in fact, the oldest kn

I came here to (wrongly) say that wooden disks were never used as wheels, and that ot all started with spokes. Some checking showed that, in fact, the oldest known wheels have a lot of solid disks. E.g: https://en.m.wikipedia.org/wiki/Ljubljana_Marshes_Wheel https://en.m.wikipedia.org/wiki/Ljubljana_Marshes_Wheel Hopefully this can disabuse others of similar mistaken memory.