GP>A modularised steam loco could be a workable complex
GP>machine in the 1990s, and a
GP>Diesel would be an unworkable simple machine in the 1920s.
GP>The only diffficult and specialised part would be the boiler.
Oh? Most buildings, esp. houses, have a boiler in them.
Sometimes it is just used to heat hot water, sometimes as an
actual boiler, but the design is parallel. What's so hard?
Reggie Arford
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