Follow along! The episode guide for “The Constant” is in Finding Lost — Season 4, pp. 60-69.Oh this episode is glorious. GLORIOUS. One of the best hours of television ever. I cannot say enough about my love for this episode… THIS is the one that really changed everything for Lost. Before this, time travel was just a distant myth: now it was a reality. Before this, Desmond just seemed like a side character who was very nice to look at, but now he took on extreme importance in the overall scheme of things. From Daniel Faraday’s crazy Oxford experiments to his journal to Widmore buying the Black Rock ledger, this episode had hints of so much that was to come in the next two seasons.
Fun things I noticed:
• Argh, I totally missed this one in my numbers round-up in my book, but just as the soldiers are doing crunches and the sergeant asks Desmond if he has anything to share, the other guy counting the crunches counts, “fifteen… sixteen” and then Desmond flashes away. Interestingly, when they flash back, the guy is on 21, so he was gone for about 5 seconds even though a lot of time lapses in 2004.
• It’s so crazy that Daniel has this page in his journal:

Crazy because I’ve had that EXACT note in my journal since season 2!!! ;)
Things that have new meaning:
• The first sighting of Daniel’s journal. That book will lead to Desmond’s salvation in this episode, and Daniel’s demise in this episode’s sister, “The Variable.”
• It’s interesting that when Des tells Dan that he knows about Eloise, Daniel immediately assumes the rat, and not his mother. Haha!
• When Dan is talking about the importance of a constant, he points to the board and says it’s covered in variables, but he flips his hand as if to say they’re unimportant. And yet in “The Variable” he’s completely changed his mind and realizes that the variables are what allows people to follow their own choices and not succumb to destiny.
• Widmore says, “It’s not me who hates you” and the insinuation is it’s Penny, but there’s also the sense that it’s someone bigger… like Jacob or the man in black.
• Keamy has the giant angel tattoo on his arm, and I remember talking about that in S4, like he’s some sort of avenging angel, but putting this episode into the Paradise Lost context (which I would argue will be the overarching text of Season 6 we will compare it to; I’ve already begun reviewing the poem) Keamy could be one of Lucifer’s angels who has come down to reclaim the territory he believes is his. That would put Widmore in the role of Lucifer. So who is God?