Salvor Hardin: It doesn't mean the physical laws are different from place to place, it just means we don't know what the complete physical laws are yet.
And all this time I thought pi was just something some smart people have measured ever more accurately over the years. I don't know why it seems fundamentally impossible for the ratio of circumference to diameter of a circle to change if one moves into a region of space with a different topology.
vacapinta: Like I said, the speed of light is a dimensional constant. If you changed it, you'd change the length of the meter, and everything else in the universe. Nothing would change relative to anything else.
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