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SurvivorNumber42 t1_j1dpdxi wrote

We know that space itself is expanding, so even the meter is not a constant over time. There is no reason to expect the speed of light to be a constant over time, either. These things only appear to be constants when viewed within the context of the instantaneous observations of man during his extremely short existence.

In other words, we have no idea what the age of the universe is. We probably never will know, and the answer would be meaningless to mankind anyway.

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