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Which thread is this again?
The "nothing new under the sun" thread :-)
Simple inflation adjustment makes £17 in 1890 about £2k now, although taking account of the faster growth in wages, that Irwell would have cost today's worker more like £8k if we hadn't got better at making bicycles in the last 125 years. If there's a miracle, it's not that the layout of the bicycle frame had pretty much been nailed within 5 years of Starley's first Safety, but that what once took 4 months of an average workers wage can now be paid for with a day's labour.
This 1890 Irwell has 11 tubes laid out exactly as we now know them