I notice you are all ignoring my argument that renders the OP both correct and superfluous. Is that because my case is too compelling for you to counter?
I don't know if you've noticed, but this entire forum is crawling with people who like to argue. It doesn't matter what it is, what it is about, or what the correct answer actually is. Its like a debate team with no subject, no time limit, and no judge. It is terrible and it exists because it has to. If I couldn't come here to argue for pages and pages about how time doesn't exist or that Oblivion/Morrowind/Skyrim being generic games, then I'd argue with real people in real places face to face. No one likes people who argue with everyone about everything in real life. They're obnoxious.
Thus we come to this forum to get it all out. It doesn't matter who you argue with here. You can be an obnoxious punk to anyone here and the most they can do is post some whiny text about it. The Internet is the greatest thing ever.
It is somewhat like proving a negative in that the effects we look for to disprove the arrow of time never occur. We never see an effect precede a cause. Once I experience this without the use of potent and enjoyable hallucinogens, and I am given a clean bill of neurological health, I will begin to contemplate your outrageous claims.
How is it proving a negative? You claimed that the universe goes from a lower level of entropy to a higher one. I'm just asking you to prove the lower level existed, since you made a positive claim that it did at some point exist.