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Discussion and Debate
Discussion and Debate
Physical & Life Sciences
Time in deep space
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<blockquote data-quote="Yttrium" data-source="post: 74112622" data-attributes="member: 419693"><p>True. And I've never been to Australia. Physics might work differently there. It would even make sense for things to work differently there, since everything in the environment there is trying to kill you.</p><p></p><p>There's no guarantee that physics will stay the same from day to day. Gravity might be less tomorrow. My next step could lead me to fall into a parallel universe. I've noticed that the universe is a strange place, and I make no assumptions on what happens in the far reaches.</p><p></p><p>Science, however, has to make some assumptions to get by. If the same experiment goes the same way 1000 times, that's usually good enough to say that it's going to go the same way the next time, even though it might not. If distance measurements seem to work consistently everywhere we check, that's good enough to say that we can measure the distance to stars, even if that might be rubbish, or it might not work the same way tomorrow.</p><p></p><p>People don't have to believe that things will be the same all over. But science has to take a stand and say that physics will be the same everywhere today and tomorrow, until demonstrated otherwise. Otherwise, there's no point in having physics at all.</p><p></p><p></p><p></p><p>Preaching to the choir.</p></blockquote><p></p>
[QUOTE="Yttrium, post: 74112622, member: 419693"] True. And I've never been to Australia. Physics might work differently there. It would even make sense for things to work differently there, since everything in the environment there is trying to kill you. There's no guarantee that physics will stay the same from day to day. Gravity might be less tomorrow. My next step could lead me to fall into a parallel universe. I've noticed that the universe is a strange place, and I make no assumptions on what happens in the far reaches. Science, however, has to make some assumptions to get by. If the same experiment goes the same way 1000 times, that's usually good enough to say that it's going to go the same way the next time, even though it might not. If distance measurements seem to work consistently everywhere we check, that's good enough to say that we can measure the distance to stars, even if that might be rubbish, or it might not work the same way tomorrow. People don't have to believe that things will be the same all over. But science has to take a stand and say that physics will be the same everywhere today and tomorrow, until demonstrated otherwise. Otherwise, there's no point in having physics at all. Preaching to the choir. [/QUOTE]
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