There exists a viewpoint that in case of a cataclysm (which would involve man-made objects disappearing) we would never, ever progress past 18th century tech again.
The argument is that getting from animal-powered devices to solar/nuclear/whatever powered devices while at the same time switching from 90%-agricultural workforce to anything more progressive can happen only if there is a cheap source of energy available - and we already have mined and spent all of easily available fossil fuels.
Even if all kinds of fancy devices are available and constructed by rich enthusiasts, the lack of cheap steam power ensures lack of cheap steel/etc, and all the technologies don't get the mass adoption required for their improvements, there are almost no advantages for industrialization, so the world gets stuck in feudal-agriculture systems as the local optimum.
