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<blockquote data-quote="Umbran" data-source="post: 7766856" data-attributes="member: 177"><p>Rarely. </p><p></p><p>No, hear me out - since the general acceptance of the scientific method, rare indeed has been the discovery that *invalidates* what we previously knew. New science generally applies in areas we could not previously see or experiment in, and thereby doesn't actually break our understanding of the universe - it adds to it.</p><p></p><p>Einstein does not *invalidate* Newton. Einstein applies when things are moving fast, or have great mass. For other things, Einstein <em>reduces to Newton</em>. Quantum mechanics does not *invalidate* classical mechanics - quantum mechanics applies in the realm of the very small, while classical applies in the realms of human-sized things, and if you apply QM to everyday objects, they continue to behave like everyday objects.</p><p></p><p>FTL travel has a major problem. FTL travel enables time travel. That breaks causality. And, aside from silliness like allowing you to be born before you are conceived, a break in causality allows for the creation of perpetual motion machines - infinite energy output from finite energy input. And that that breaks the laws of thermodynamics. FTL looks to *invalidate* the laws of thermodynamics - unless there's some limitation to FTL that means it doesn't apply on the time, mass, or distance scales we currently observe. </p><p></p><p>I won't claim it is impossible. But, while the race doesn't *always* go to the swift, nor the fight to the strong, that's the way to bet.</p></blockquote><p></p>
[QUOTE="Umbran, post: 7766856, member: 177"] Rarely. No, hear me out - since the general acceptance of the scientific method, rare indeed has been the discovery that *invalidates* what we previously knew. New science generally applies in areas we could not previously see or experiment in, and thereby doesn't actually break our understanding of the universe - it adds to it. Einstein does not *invalidate* Newton. Einstein applies when things are moving fast, or have great mass. For other things, Einstein [I]reduces to Newton[/I]. Quantum mechanics does not *invalidate* classical mechanics - quantum mechanics applies in the realm of the very small, while classical applies in the realms of human-sized things, and if you apply QM to everyday objects, they continue to behave like everyday objects. FTL travel has a major problem. FTL travel enables time travel. That breaks causality. And, aside from silliness like allowing you to be born before you are conceived, a break in causality allows for the creation of perpetual motion machines - infinite energy output from finite energy input. And that that breaks the laws of thermodynamics. FTL looks to *invalidate* the laws of thermodynamics - unless there's some limitation to FTL that means it doesn't apply on the time, mass, or distance scales we currently observe. I won't claim it is impossible. But, while the race doesn't *always* go to the swift, nor the fight to the strong, that's the way to bet. [/QUOTE]
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