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Viking_Hippie ,

deleted_by_author

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    Balthazar ,
    @Balthazar@sopuli.xyz avatar

    To clarify, as youve not understood the joke, nor read the comments. As far as I understand it, were you to start sailing at the first point, you never have to turn to arrive at the second. That’s why it’s “straight”. On the 2d plane you are completely correct however.

    For proper and better informed explanations read the other comments :D

    thejoker954 ,

    I feel like this is related to the can’t measure the coast’ thing.

    Like if you zoom in enough you are always traveling in a straight line.

    filcuk ,

    I don’t know… straight, I would assume, means that I could walk or drive a vehicle and not turn at all, ignoring any external influences like waves and currents in this case.

    Tudsamfa ,

    But your vehicle would itself “curve” “downwards” due to gravity, surely a straight line means that you can point a laser, or a hypothetical 0 mass particle beam, uninterrupted from your starting point to your destination.

    WilloftheWest ,

    Depends on your frame of reference. When traversing the surface of a globe, your described concept of a straight line isn’t intuitive.

    linkhidalgogato ,

    in ur every day life if u travel in a car without changing direction would u say that u went in a straight line or in an arc. Clearly u are just trying to be a pedantic cunt for no reason.

    Cornelius_Wangenheim ,

    It’s more that 2d projections of 3d objects are wonky and unintuitive.

    itslilith ,
    @itslilith@lemmy.blahaj.zone avatar

    You just discovered the field of calculus! If you look closely enough at any smooth function it looks locally linear, and the slope of that linear function is it’s derivative

    Not quite what’s happening here, here the problem is if you consider geodesics on a sphere to be straight. In special geometry they are, for all intents and purposes, but in higher euclidian geometry they form large circles

    Thcdenton ,

    Hey that’s neat pulled it up in a 3d globe web app and its pretty close to straight

    ininewcrow ,
    @ininewcrow@lemmy.ca avatar

    There was a conversation I read a while ago that showed how a sailboat could travel a straight line over water from Halifax, Nova Scotia in Canada, travel southeast and end up on the west coast of British Columbia.

    Basically sailing from the east coast of Canada to the west coast of Canada in a straight line.

    ChaoticNeutralCzech ,

    The line was published by David Cooke in this YouTube video. It lies on a plane but is not quite a great circle (in practice, you’d be turning slightly) and good luck sailing over the Antarctic ice shelfs this decade.

    dumbass ,
    @dumbass@leminal.space avatar

    I dont know much about straight lines, but he sure does look happy.

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