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Exactly how many data points did he have in this thesis? Running, horse, bike, car, train (coal, electric, diesel), plane? There's lots of places which have f
by dnautics 5y ago
Exactly how many data points did he have in this thesis? Running, horse, bike, car, train (coal, electric, diesel), plane? There's lots of places which have flip flopped, e.g. Italy going from train -> Alitalia -> high speed rail
- onion2k 5y agoWouldn't it be more like running, horse, better horse because of improved diet, better horse because of improved medicine, bike, better bike because of gears, better bike because of better gears, car, better car because of better fuel, better car because of better fuel, better car because of better fuel, better car because of better fuel, better car because of better fuel, better car because of better fuel...
- fullstop 5y agoAt some point economical aspects are also important. If fuel was available for gas engines but it was rare, it doesn't matter how energy-dense it is if it's expensive.
- dnautics 5y agoyep. The Soyuz was supposed to run on Syntin but then they reverted back because the added energy density and payload capacity (something like 30%) was not worth the manufacturing cost. https://en.wikipedia.org/wiki/Syntin https://en.wikipedia.org/wiki/Syntin Edit: Soyuz U2 (Syntin version) launched 72!! rockets. Then they reverted back.