Quote:
Originally Posted by HarryT
It's actually an interesting point: that there's a whole lot of physics that we know isn't "correct", but it produces good enough results to get the job done. Newton's law of gravity, for example, assuredly isn't "correct", but you can use it perfectly satisfactorily to get a spacecraft safely from Earth to Mars. It's only in extreme conditions that you need to switch to General Relativity (and even General Relativity we know is not "right").
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And sometimes the conditions under which General Relativity comes into play aren't even so extreme as to be outside of things that impact our lives, such as adjusting the clocks on GPS satellites.
