The best theory I have seen yet (it explains almost everything)

[rappapod]

This is a long read (this web page) but I implore you to read it to the very bottom.  It answers almost everything.

http://www.timelooptheory.com/the_timeline.htm

[this is some crazy stuff]

cool read but way to much speculation.  I like to make my theories from facts not stuff i just randomly think og

[WhatThe]

^Yeah, too much speculation and not enough theory based on facts given in the show (Dharma built a time machine that can transport entire polar bears, but the time travel shown so far has been through consciousness, not physical. Your womb will age, but your body will not? Huh?)

[BobBX542]

Agreed, the person who came up with this obviously put alot of thought into it, but not enough evidence from the show to really back anything up. very creative, but thumbs down.