• skuzz@discuss.tchncs.de
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    1 day ago

    Very true, your example is airtight. Where mine gets a bit more in the weeds, is the air conditioners and filters in the cabin have an express purpose of manipulating the temperature and climate, that is their only purpose. Otherwise the air coming into the cabin would be so hot from being compressed in the engines everyone would die and all the machines onboard would overheat.

    It was a bit more technical, complicated, (air inside a plane in the atmosphere is still air from the atmosphere being manipulated!) and on the edge though, and not as easily conveyed as umbrellas.

    Kudos for yours though, it was to the point.

    So perhaps, they should just ban the air conditioners on jets to get it technically correct?

    • agamemnonymous@sh.itjust.works
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      9 hours ago

      the air conditioners and filters in the cabin have an express purpose of manipulating the temperature and climate, that is their only purpose.

      I think you’ve accidentally uncovered a better example. Regular home A/Cs work by releasing hot air into the atmosphere:

      To make the inside cool, they have to disperse hot air (which is definitely a chemical or substance) into the atmosphere. That is their express purpose.

      So by this law, A/C in Florida is banned.

        • agamemnonymous@sh.itjust.works
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          2 hours ago

          That’s like saying the express purpose of hunting isn’t to kill something, it’s to acquire meat. The express purpose is to move heat from inside to outside. You can’t “produce” cool air, you can only move heat.

          • partial_accumen@lemmy.world
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            1 hour ago

            That’s like saying the express purpose of hunting isn’t to kill something, it’s to acquire meat.

            If you’re hunting to eat, the express purpose of hunting is to acquire meat. If you’re hunting for sport, then you may not care about the meat the express purpose would be the desire to the kill or the resulting trophy.

            You can’t “produce” cool air, you can only move heat.

            You’re focusing on the mechanism. The definition of “express purpose” is focusing on the result.

            • agamemnonymous@sh.itjust.works
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              1 hour ago

              If you’re hunting to eat, the express purpose of hunting is to acquire meat.

              Then go to the store. If you’re hunting, assuming it’s not for sport, your express purpose is to kill something to eat. You don’t get meat without the death. Likewise, the express purpose of A/C is to move heat outside. You don’t get the heat out of the inside without releasing it to the outside.

              The definition of “express purpose” is focusing on the result.

              The laws of thermodynamics are not a side effect. Again, you cannot “produce” cold air, it cannot be the purpose because it is not physically possible. The result is transporting heat from inside your house to the outside atmosphere. That is the express purpose of the air conditioner.

          • partial_accumen@lemmy.world
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            4 hours ago

            … (inside a building, which is still in the borders).

            …but may be hard to argue it meets the other clause of “in the atmosphere”. Yes, there is air in the building, but unless the building isn’t well sealed (which it would be generally well sealed to keep the cold in) then the cold isn’t expressly being released into the atmosphere.