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Doesn't common sense tell us that this Universe isn't ruled by common sense?

Asked by ETpro (34605points) November 14th, 2013

I mean, common sense tells us that there’s a first time for everything, right? Oh and also, common sense tells us there is nothing new under the Sun, right?

Common sense tells us that once time starts running, it goes on forever. But common sense also says nothing can go on forever. And whether physicists think it’s a well formed question or not, common sense says that time should run infinitely into the past, before the Big Bang.

Perhaps there was no space time before the Big Bang, but just projecting our thoughts there puts “something” there, and common sense says where something goes, it goes through time. Likewise, how can the Universe have an end? Is there a wall you can’t step through? What’s outside the wall?

When we look at the microscopic scale, we run head-on into quantum mechanics which flies in the face of all human reason. Likewise, on an astronomical scale, the human mind boggles.

Why would we think that common sense developed via evolution to help us survive as hunter gathers on the savannas would be predictive at the quantum and astronomical scales that our world really flows from? It’s just not common sense.

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