Okay, that makes sense, but I still don't understand something:
Why is the Dead Sea filled with a variety of different time periods that have been smashed together?
Back on topic, here is a theory about how Serge was responsible for the world's destruction. Could his direct contact with the Frozen Flame, which would mean he technically made contact with Lavos, have contributed to him being the Assassin of Time? He became the Arbiter of the Frozen Flame, and nobody else, including FATE, could access the Flame except Serge. FATE was trying to preserve history, and not to mention, its
own existance. If FATE couldn't access the Flame and have complete control of what was going on in Chronopolis and El Nido, then something drastic could occur, which could eventually lead to negating Crono's victory over Lavos. If FATE couldn't bring Serge to Chronopolis to access the Frozen Flame, then history would have been at great risk of being drastically altered.
There is a problem with this theory, though. Serge came into contact with the Frozen Flame in the year 1006 A.D. The split in the dimensions occurred in 1010 A.D. This means that both Home World's Serge and Another World's Serge had already become the Arbiters of the Flame. FATE wouldn't have been able to prevent Serge's contact with the Flame. Basically, both worlds were doomed, unless FATE could figure something out. And FATE
did figure something out. If Home World's Serge was alive, then FATE could still have a chance to gain access to the Flame. Another World's Serge was dead, and FATE couldn't gain access to the Flame unless it could bring Home World's Serge to Another World and use that Serge to gain access to the Flame.
As good as this all sounds, there is still one more problem. Serge eventually destroys FATE. Well, what happens after that? Are the citizens of El Nido free to do as they please? Is Another World's future still at stake, not to mention Home World's future? Is there a possibility that Chronopolis's future could eventually cease to exist? Or maybe Lavos is still eventually destroyed anyway, and everything proceeds normally. But if this is so, then why couldn't Home World's future proceed normally without FATE, just like Another World's future could proceed normally without FATE? Why does the Dead Sea still exist in Home World?
By the way, here is something interesting I would like to bring up. In Russian, Serge means "servant". If Serge did indeed make some kind of connection with Lavos through the Frozen Flame, then could Lavos, working by means of the Frozen Flame, have "used" Serge in such a way that he sealed his own victory against Crono? This would mean that Serge was, quite literally, the "Servant of Lavos".
Note: I think I may have confused myself writing this whole theory, so hopefully someone can figure out what I am trying to say. <_<
P.S. This is completely obscure and has nothing to do with my above post, or the topic for that matter, but I think it is rather amusing.
El Nido is Spanish for "The Cradle". El Nido was supposedly where the origin of all life began (the Sea of Eden), thus it is the Cradle of Civilization. But remember that saying: "The hand that rocks the cradle rules the world"? Well, who was the hand that governed El Nido, the Cradle? Answer: FATE.