If you've been following the weekly Fringe "5 Questions About" posts here every week, it's more than likely you have a question of your own about them: When, exactly, did Lincoln Lee die in the original timeline?
The short answer is, he didn't. The two posts where I said otherwise have already been corrected, and I apologize profusely for not only being wrong, but being so convinced that I was actually right that it took two weeks of people telling me that I was wrong to go back and check, neither of which are good things.
Having now rewatched "Stowaway," the third season episode in which original timeline Lincoln appears, I'm not entirely sure where I got the deep-seated conviction from that he had actually died; I'm tempted to make a joke about it having happened in the Fringes made before the Observers rewrote the timeline, but the truth of the matter is clearly the combination of a bad memory and an overactive imagination; to my shame, I can remember that Lincoln/Olivia/Lincoln's conversation about Batman and Mantis from last Friday's episode made little sense because Batman exists in the alternate universe (or, at least, he did before this season), but not whether or not someone died in an earlier episode. Seriously, this is not a good sign for my impending old age.
All jokes aside: I am genuinely sorry -- and suitably embarrassed -- for my mistake, and for being so convinced in my (mis)information that I didn't go back and check immediately. I'll try harder to not be so blatantly wrong (and stubborn) in the future, and also try not to be too upset at the collapse of two pet theories that relied on Lincoln's status in the original timeline, even though they were really good theories, dammit…