Yesterday my commute in to work was just me and the two fat bikes of Balerno, one is a fat bike and the other is a very fat bike. On way home it was very zen like after Arobcomp left me to my thoughts at the Lanark road bridge. The nearer to Balerno I pedalled the narrower the channel in the ice became. I was concentrating but also imagining a fat bike and rider being transported back to the Iron Age and helping to invent the bicycle at that time rather than the 18th century.
Were people too focused on swords, chariots and horses to imagine a bicycle or was the terrain too arduous for cycling or was there a lack of technology? It was blacksmiths who made the earliest bikes. My fat bike time traveller would be the only one with rubber tyres but the others could have wooden wheels. The chain could maybe be a leather belt etc. I think if sir professor Brian Cox invents time travel then this is a possibility?