Comments by "TheEvertw" (@TheEvertw) on "Range-finding and Fire Control - Plotting Your Demise" video.
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@planereality3675 You are very rude, mate, and also dead wrong.
I understand that a favorite idea with flat-earthers is "if the earth is round, why do navigators use maps". The answer is of course that maps are easier to store than globes for the same level of detail.
However, every navigator will tell you that maps are compromises that try to optimize for either true directions (Mercator projection), true distances, true surfaces, or true shapes. Maps can never get all those aspects right because the earth is a sphere, and you can only navigate accurately over long distances if you account for that.
E.g. the Mercator projection is popular with navigators because it gives a correct heading for sailing from point A to point B. But the scale of that map is not constant: a specific distance on that map represents different distances on earth depending on latitude.
Now I ask you, if the earth were flat, why would there be different projections for maps? And why can those projections be explained using a sphere?
And you are wrong about globes never being used on ships: there have been globes made for navigators, such as those by (again) Mercator. While globes are difficult to use for actual navigation, they are very good for doing sanity checks on your calculations.
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