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A comment on Where Did Time Come From, and Why Does It Seem to Flow?. Parent comment
http://en.wikipedia.org/wiki/Mach's_principle
An important implication of relativity is that when you push something, you do not change it's velocity. You change it's acceleration. It's a small but important distinction. Acceleration is more fundamental.
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http://en.wikipedia.org/wiki/Mach's_principle
An important implication of relativity is that when you push something, you do not change it's velocity. You change it's acceleration. It's a small but important distinction. Acceleration is more fundamental.