From what I can gather the writings have something to do with the future effect of Terra Nova. I know at one point they said that who controls the past controls the future, so I'm thinking it has to have something to do with that.
I am curious as to WHY the couple decided to have the 3rd chid even though they knew the reprecussions! I hope they revisit that soon!
ETA: Jennifer I LOVE Fringe! It's one of my favs! Definitely a show you havet o watch from the beginning though or you will be lost!