^Well the episode meaning was totally literal. "Jughead" was the name of that atomic bomb. Remember what Faraday told Desmond when he started to become "unstuck" in time? He asked if Desmond had been subjected to an intense does of radiation or electromagnetic energy. Clearly, Desmond had been exposed to the later in the Swan Hatch, and he needed a Constant. But Daniel also had a Constant. Why? Well, guess who was just exposed to a high does of radiation in this episode when inspecting the Jughead?
scarezebra said:
What I do not understand is won't LOSTIES going back in time and killing the others affect the present ? IN the last 3 episodes itself they killed off 3 others....
I think I understand how the skipping all works out now... and it's exactly how Faraday told us originally.
Whatever happened, happened.
There aren't two timelines, one where Locke shows up and talks to Alpert in 1954 and one where he doesn’t. There's just one - the one we saw - where Locke shows up and tells Alpert about Jacob, that he will be the future leader of the Others, and the date of his birth. Even though we didn't know about this interaction until this episode, it's always been there. Alpert has known about it since we first met his character in Season Three. The confusing part here is that it brings up a tricky "chicken or the egg" scenario in my mind that seems to create an infinite time loop. Here's what I mean:
* In 1954, Locke tells Alpert information about his birth and that he will be the leader of the Others.
* Because of this, Alpert monitors Locke from his birth, and is in effect "waiting for him" to arrive on the Island (you could even argue that Alpert sent Abaddon to put the thought in his mind about going on the Walkabout).
* Because of this, Locke ends up on the Island and becomes leader of the Others.
* Because of this, he visits Jacob's Cabin and finds out about moving the Island, relaying the message to Ben.
* Because of this, Ben turns the FDW which causes him to skip in time.
* Because of this, Locke visits Alpert in 1954 and tells him about his birth.
If you think about time in a straight-line fashion, similar to the "string" example that Faraday used in the season premiere, this initially sounds impossible because the first step in this timeline can't exist without the last - and the last can't exist without the first. However, if a person thinks about time as more of a loop - where there is no beginning and no end, this would make total sense - of course the events are circular. The end becomes the beginning and the cycle repeats, which means there isn't any problem with having an "infinite loop" like this.
Link
. but i kinda felt Jughead as a episode name didn't suit the episode..
But yes, I would have settled for 3 days instead of a week 
, So rest assured the writers know exactly what they are doing.
