Eli5 how does the GPS know exactly how Long it will take you to get somewhere? Factoring in driving at different speeds or unforseen traffic that’s an hour away
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It doesn’t. Try writing down or memorising the ETA it gives you at the start, and see if it’s always accurate to the minute. It won’t be. It can use current and historical traffic data to predict what traffic might be like by the time you get further into your journey, but of course it can’t know things like if there’ll be a crash or not, whether you’ll sneak through that annoying light that sits on red for ages or get stuck behind a tractor for five minutes on a narrow road with no overtaking possibilities, whatever.
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