Why are weather forecasts sometimes so different from each other? Don’t they all use the same data and science?

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I’m talking about information displayed on different weather websites. One will say that there’s a very high chance of rain in a place at a certain hour, for multiple hours, and another will say that there will be just some light rain in the first hour, then it will be dry/sunny.

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Anonymous 0 Comments

Say you draw a whole bunch of squares on the ground, then you hold a bouncy ball up in the air above them. You have a whole bunch of people watching. Everyone can see the squares, can see you, they know everything about the bouncy ball you’re holding…they have complete knowledge of how everything looks *right now*.

You ask them to make predictions about where the bouncy ball will go when you drop it. You end up getting several different predictions from different people, because even though they know everything about the setup *right now*, they can only make predictions about what *might* happen next. Then you drop the bouncy ball and see if any of their predictions are correct.

If it’s someone’s *entire job* to make predictions about where the bouncy ball will land, they’ll probably make a pretty good guess…but they still can’t be sure, and they may still come to different conclusions than someone else.

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