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Given that the second law of thermodynamics states that entropy always increases and the universe is currently not in a state of maximal entropy does that not imply that it must have started at a point in the past? And that it could not have existed forever?

Thermodynamics was developed in the mid 1800's while the big bang was first proposed in the 1920's if the above argument is correct did anyone else argue it before general relativity?

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    $\begingroup$ cool idea, no pun intended. $\endgroup$ – Alex Jul 23 '15 at 1:05
  • $\begingroup$ This argument only applies if you know the universe is finite, as if it is infinite, it can have infinite entropy, and therefore the second law of thermodynamics doesn't imply it started from zero. To my knowledge, before the big bang theory we had no evidence about whether the universe is finite or not. $\endgroup$ – Omry Jul 24 '15 at 11:02

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