• Archangel1313@lemmy.ca
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      1 day ago

      “In theory”, if one of those angles equals exactly 90 deg. But “in reality”, nothing will ever truly measure exactly 90 deg. Best you’re going to get is 90.0000-something. Reality doesn’t work in absolutes…only approximates. Some are more accurate than others, but none are perfect.

      • MsPenguinette@lemmy.world
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        6 hours ago

        If a triangle oscillates from having an angle greater than 90 deg to less than 90 deg, there has to be a moment where it equaled exactly 90 per the hairy ball theorem

        • ttayh@lemmy.zip
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          4 hours ago

          Oh but you see (you fool!) you used the word theorem, ergo, by your own admission, this only works in theory! Hoisted by your own petard! - Archangel1313, probably

      • Zarobi@aussie.zone
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        18 hours ago

        Reminds me of that Rick and Morty episode with the perfectly level floor. At a certain point in reality you also would need perfect tools to check if something is perfect. Measuring the stick so to speak. I believe it is theoretically possible to get perfect angles, but keeping it that way might be a challenge outside of a vacuum. As a thought experiment, if you take your arm, hold it straight, then bend it, for 1 picosecond or something, wouldn’t the angle of your arm be exactly 180.000~°, 90.000~°, etc, as it is bending?