Why did we wait so long for the bicycle?
https://rootsofprogress.org/why-did-we-wait-so-long-for-the-bicycle [rootsofprogress.org]
2019-07-16 03:16
The bicycle, as we know it today, was not invented until the late 1800s. Yet it was a simple mechanical invention. It would seem to require no brilliant inventive insight, and certainly no scientific background.
Well, not exactly.
source: HN