Okay, so I'm having a hard time wrapping my brain around this, so if you have the answer, or any answer, please help me out. This conundrum deals with the episode "Follow the Leader."
In "Leader," FLocke leads Richard Alpert and Ben Linus to an injured John Locke after he had just jumped through time near the beechcraft. FLocke then tells Richard that he must tend to John's wounds, and inform him that he has to bring everyone back to the island. He must also tell John that in order to be successful, he must die.
Now, at this point, FLocke has already taken on John's form. Furthermore, while some were stuck in 1977, all of the candidates were currently back on the island. Everything was working towards the Man in Black's favor. So why did FLocke need to tell the John in the past to kill himself?
Moreover, before this event happened, John took his life anyways.
I can't figure out why this action is necessary towards the Man in Black's elaborate plan. If possible, please help me make sense of this situation.