Why does putting a carriage on rails make it much easier to pull? As in, how were the first trams such an improvement from omnibuses when the same weight was still being pulled?
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Think of your feet on the fwoor in our house. The wood fwoor is swippery, and the carpet is less swippery. Your bare feet are less swippery than your feet with socks, and the clothing maker helped us out by putting dots on the bottom of your socks.
Rail cars are your feet with socks without dots on top of the wood floor, and that’s why I can push you around without your feet even moving. It’s also why you can run and slide on your socks on the wood fwoor. Tires on concrete are your bare feet on the carpet, and you only fall down there because you are bad at staying on your feet and you enjoy falling down.
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