...alternate timeline / side-flashes.
It seems there's more different in the alternate reality than just not crashing... things that were different before that moment.
Uh, obviously. I don't know why some people seem to think that the branching point in the timeline would be the plane not crashing. The island having sunk years prior would be the thing which could potentially have caused all the other changes, as the Island sinking means that the Others don't interact with the outside world as in the prime timeline, and Widmore doesn't spend years trying to get back to the Island. Butterfly effect could then cause all of the other subsequent changes that we see. The question is really just "Why did the Island sink?" Was it just the bomb going off, or something else?
It's not that obvious. I mean the only thing that really stood out for me was Hurley saying he's the luckiest guy in the world. I didn't start noticing the other differences till I thought about it later, and I didn't catch half of the ones outlined by Hermiod
1) Sun and Jin are not married.
What? I didn't catch that at all!
2) Kate does not attempt to retrieve the all-important toy aeroplane from Mars' case, suggesting her relationship with her childhood boyfriend Tom Brennan went differently. (There is also a suggestion out there that Kate did not murder her father but someone else)
Didn't notice the thing about the toy. As for her being innocent, I didn't feel like that was the implication at all. She asks "would you believe me if I said I was innocent?" and Claire says "yeah", and she gives a look that suggests she really isn't innocent and feels bad for conning another person.
3) Jack's father's body and Locke's knives are left off the plane.
Hmm... didn't think about Locke's knives. As for Jack's father... well, there's no case for comparison there. I felt like the implication was it disappeared magically when they passed over the island, which could be true in both cases.
5) Ethan uses his birth name, Ethan Goodspeed, and becomes a Doctor living in Los Angeles.
6) Benjamin Linus is European History teacher at the same high school where John Locke becomes a substitute teacher.
His birth name? What other name is there?
Obv the others can't be on the island since it's under water, I see that as more of a consequence of a difference rather than a difference.
7) Locke, curiously, does not react when Helen suggests inviting his father to the wedding. This may indicate a change in the reason why Locke is paralysed.
I did notice this but was confused and thought maybe I was remembering wrong or that there was something I forgot about him having a biological dad and an adopted dad or something.
8) Michael and Walt appear not to be on the plane.
Speculation. More like the actors weren't in the episode, which proves nothing.
9) Charlie has a different haircut.
Really? Is that intentional or just one of those minor things?
10) Jack is nervous about flying and is calmed down by Rose. (This was the other way around originally)
Ahhhh.... totally forgot about that.
11) It's unclear whether or not Eko, Ana-Lucia, Libby, Paolo or Nikki were on the plane.
Just like Michael and Walt... doesn't count
12) Sayid has an Iranian passport but marked "Iraq" as his country of origin on his immigration form.
Sounds like a production glitch.
13) Desmond is briefly shown to be wearing a wedding ring while on the plane.
Never would have seen that.