Episode 35: Physics and Relationalism: An Interview with Julian Barbour
The Theory of Anything
00:00
Shape Dynamics - Is There a Ruler Outside the Universe?
There's no ruler outside universe tat thats. I mean, tell that to the marines, that there's something out there that we can measure the size of the universe by. So all you can say, suppose the universe did just consist of three points that are always at the vertices of a triangle, all one can objectively say about it is that one side of the triangle is shorter than a different side. Those are pure numbers. And shape dynamics is just insisting that everything we say about the whole universe should be expressed in terms of ratios like that.
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