Death camps and work camps I think
The Industrial Revolution created many jobs, however, working condition was horrible. Because of the reforms, jobs became more tolerable, people made more wages, and work hours were lower.
It connects the book's ideas about early bicycle variations.
Look at the picture, you see a bike from today's decade and if you look down the picture of bikes you see them down playing the bikes and also looking forward you see them upgrading the bikes.
