The "Fringe" episode "The Human Kind" can be looked at two different ways. It can be seen as a series of events leading to an interesting conclusion, and as a series of interesting characters that show us what factors can humanize or dehumanize people. Technology dehumanizes Peter (Joshua Jackson), but love humanizes him. Olivia (Anna Torv) also goes through an evolution, from love and trust, to anger and distrust, and back to a place of love.
The teched-out braniac
Olivia obtains the same tech that Peter implanted in his own brain from Anil (Shaun Smyth). We then see the results of that tech, as Peter watches Windmark (Michael Kopsa) enter Etta's (Georgina Haig) old apartment to see Peter's notes. Windmark knows that Peter can see and affect the future now, and Peter knows that he knows, as if it is all part of his plan.
Olivia later brings the tech to Walter (John Noble) and Astrid (Jasika Nicole) for testing. Walter determines that the tech increases the size of the parts of the brain responsible for logical thought, while snuffing out the part responsible for emotion, and quickly. The tech must be removed before the Peter who cares about what he's fighting for is lost forever.
The gifted one
Walter and Astrid release the next Betamax tape from amber, and find that the next part of the plan involves a very large electromagnet. With Peter off doing his own thing, Olivia is forced to find the object on her own. The magnet is located in a scrapyard, where a woman, Simone (Jill Scott), greets her happily. The story of the magnet had been passed down from her mother, who had been told by Walter the story of the plan to save the world from the Observers in 2036. Simone has been waiting for Olivia for 20 years.
Olivia has doubts when she realizes that some of the other people in the scrapyard are discussing the bounty on Olivia's head. But Simone explains that Olivia must have faith. She claims to be psychic, and that Olivia shouldn't lose all trust of others because of the things that have happened to her in the past.
Raiders lie in wait as Olivia tries to pass a small road with the magnet. They see that she is listed on the "reward wire" as a fugitive, and kidnap her. She Macgyvers her way out of her restraint, and fashions a gun using "the bullet that saved the world." She surprisingly shoots one of the kidnappers right in the head with the gun. She takes his gun and shoots the other kidnapper in the head. Boom! No hesitation. Olivia seems hardened at this moment, but digs the bullet out of the wall. It has now spent time inside two different heads (including her own).
Oh, the humanity!
Peter fights a near-epic battle with Windmark and one of Windmark's men. Windmark claims that he is creating Peter's future rather than the other way around. Windmark shows Peter Etta's last thoughts of her beloved parents before she died. He has a moment of pain thinking of the loss of his daughter, but is able to kill the other Observer and escape with injuries. He goes to Walter to get stitched up, which begins his path back to humanity.
When Olivia returns, Walter is able to tell her where Peter went; there must have been just enough of old Peter left in that high-tech brain of his that wanted to be saved from oblivion. She finds him as he is plotting Windmark's death, which is supposed to take place the next day.
It's a double-edged sword. Is it worth the risk of losing the humanity of just one person in order to take down the ringleader of the Observers? Would his death even make a difference in the long run? Olivia did not think it was worth the risk. The surer bet is to follow Walter's plan. It would be impossible for Peter to know whether his plan would really work anyway. Olivia helps him remember Etta, the reason he's fighting, and the love for her he is about to destroy forever. He removes the tech from his brain, and his emotions come flooding back.
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