this was the original purpose of replicants - not to create multiple Tyrells at once, but for the replicants to be activated in sequence, each one extending Tyrell's own life by four years. Although the ability to transfer the gestalt of a living person into a replicant body had been developed, it had not been perfected, and error inevitably crept into the process, meaning that after only a few iterations the generated replicants were insane, or vegetables. What Eldon Tyrell discovered was a way to prevent that from happening. Carsten asks her to think back to the moment when Tyrell was murdered by Batty, highlighting several unexplained discrepancies in the movie. His claim is that Batty did not ever plan to have his lifespan extended. That was only an excuse, to allow him to get close to Tyrell. Batty came back to Earth to kill Eldon Tyrell, and for no other reason. And not just to kill Tyrell, but to kill him in a very specific way - by crushing his eyes. Carsten opens the eyelids of each of the duplicates, revealing that there are no eyes in any of them. The eyes, the windows of the soul, were also the key to transferring a gestalt between multiple replicants without error; and Batty destroyed Tyrell's. Batty's goal was to get revenge on Tyrell for consigning him to a life of slavery in the colonies, but he was aided by the UN, who had realised that Tyrell had discovered the key to eternal life. Scrappy, the owl, contains a backup of Tyrell's personality. With the owl, plus a suitable replicant, Tyrell could be brought to life once more. Finally, Carsten opens the last transport container in the line, revealing an eyeless replicant of Iris, aka Rachael, aka Sarah. Iris instantly shoots the suspended replicant. The director, and the camera operator, are still monitoring the scene, observing all of Iris's reactions. The camera operator begins to have doubts about what he is doing, wanting to warn Iris, to tell her that something about Carsten's story is not straight. Two intruders burst into the base, shooting Carsten dead. Iris quickly hides as Meyer walks into the room, but he mistakes the dead female replicant duplicate for her and leaves. Outside, she hears him talking to someone else, then shooting him dead. Leaving the compound, she finds that the other man was Vogel, and