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Emergent Behavior is Curie's companion quest in Fallout 4.

Quick walkthrough

Companion Quest: Emergent Behavior
Gain Curie's approval.
Find someone to help Curie.
Bring Curie to Doctor Amari.
Wait 24 hours for the procedure to be done.
Talk to the caretaker.
Watch Download Procedures.
Talk to Curie.
Reward: 300+ XP
Improved reputation with Curie
Synth Curie

Detailed walkthrough

After gaining 250 affinity points with Curie, she will ask the Sole Survivor if they have a moment to speak. She claims that her robotic nature and its lack of "Human Inspiration" prevents her from progressing any further in her research, and then asks for the Sole Survivor's help to become more human so that she may further her research.

Once the quest Dangerous Minds has been completed, the player can then suggest asking Doctor Amari, a memory specialist and affiliate of the Railroad at the Memory Den, for help.

After dialogue with Doctor Amari, it seems that this kind of transfer could work by using a synth body. Doctor Amari tells the player that she has performed risky memory-wiping procedures on willing synths desperate to escape the Institute, and that those whose procedures have failed are now in a persistent vegetative state as a result, giving the opportunity for Curie to use one of these synths if their caretaker consents.

After waiting 24 hours, one will find either Glory or an NPC named Caretaker with a female synth, designated G5-19, waiting with Curie and Doctor Amari in the basement of the Memory Den. Upon talking with Glory or the caretaker, the process will commence and Curie's mind will be transferred into the generation 3 synth body where she experiences new and confusing human feelings, leaving her old Miss Nanny body empty and deactivated.

Quest stages

Quest stages
StageStatusDescriptionLog Entry
100 Find someone to help CurieCurie wants to become human, or as close to it as she can better pursue her studies. We need to find an expert: a brain surgeon, an AI programmer, or similar.
150 Bring Curie to Doctor AmariIf Curie seriously wants to become human the logical person to help is Doctor Amari. With her expertise with the memory pods and Synths, perhaps Curie could get her wish.
200 Wait for Doctor AmariDoctor Amari's memory operations don't always go well. There's a brain dead Synth that may be a good host for Curie. Doctor Amari needs time to contact the Synth's caretaker.
300 Talk to the caretakerG5-19's caretaker has arrived. I need to convince her that she should donate G5's body to Curie.
400 Watch the download procedureWith consent granted, Doctor Amari is ready to download Curie into G5-19. Hopefully the procedure will work successfully.
500 Talk to CurieThe operation appears successful. I should talk with Curie to make sure it's really her and she's healthy.
600Quest finishedQuest completeIncredibly, Curie has been downloaded into a Synth body. This is obviously going to be a major adjustment for her. She'll need me more than ever.
9000Quest failedQuest failed


  • When Curie enters her new body, the items in her old inventory are not transferred to her new one. (Her old body has 865d1 as the reference id.)
  • Glory from the Railroad will remark that G5-19 was like family to her and that she should have refused to allow her body to be donated to Curie. She can be persuaded that Curie's scientific skills could help a lot of people in the long run, though she does not seem particularly convinced.
    • If Glory is dead or the player has not encountered the Railroad yet, an NPC named Caretaker will take her place. Unlike Glory, the caretaker will already be convinced and no persuasion will be required.
      • If the quest is completed before joining the Railroad and the player joins later, Glory will still talk about regretting giving up G5-19 for the procedure as if she was there, even though she was not.
  • Even though the transferring procedure has not yet begun, G5-19's body inside the memory lounge is already marked as Curie in V.A.T.S.
    • G5-19 can also be spoken to and will respond with Curie's voice.
  • If she has been modified at the robot workbench, Curie's body will revert to its default state during the transfer.
    • All mods equipped on Curie's robot body will be lost.
  • If Curie is highlighted through Overseer's Most Wanted, the quest marker will update automatically to Curie's new body upon returning to the Memory Den to begin the procedure, even while her old robot body is still active.

Behind the scenes

The title is a reference to the philosophical stance of Emergentism, which is the belief that consciousness can be an unexpected 'side-effect' of, or that it 'emerges from,' complex interactions in a system, like a brain or a similar computational system. In any case, Curie behaves like a conscious entity, which makes her qualified for consciousness under the philosophical doctrine of Behaviourism. The title 'Emergent Behavior' catches both these aspects.


  • Playstation 4Playstation 4 Xbox OneXbox One If Doctor Amari is killed in any way, the objective may stay on "Bring Curie to Doctor Amari" and will not fail, making it impossible to complete the quest. This effectively eliminates the chances to get not only synth Curie, but her companion affinity perk as well.[verified]
  • PCPC Playstation 4Playstation 4 Sometimes upon successfully transferring her to her new body, Curie will have a glitched smoking animation while idle with no weapon equipped. No workaround has been identified yet.[verified]
    • This may be fixed by reloading an old save and traveling to the Railroad. Glory will then be the caretaker of Curie's synth, and Curie will not be smoking.
    • PCPC This can be fixed through the use of console commands by selecting her and typing caf.
  • PCPC If the Miss Nanny version of Curie has been flagged as protected somehow, the script will fail to kill the Miss Nanny. If one speaks to it, it will speak lines from the stage of the quest where Curie waits with Doctor Amari.[verified]
  • PCPC Playstation 4Playstation 4 Sometimes, when the scene begins for Curie to be transferred to her new body, the old Curie (Miss Nanny) is not present, but the voice is heard. After completing the transferal, the old Curie body can be found upstairs in the main room of the Memory Den.[verified]
  • PCPC Playstation 4Playstation 4 Upon completion of the quest, one can get two instances of experience being awarded.[verified]
  • PCPC Playstation 4Playstation 4 Xbox OneXbox One Doctor Amari will go to the basement to wait for the caretaker. Sometimes the caretaker will already be there, though Amari won't acknowledge her existence unless the player first waits 24 hours. [verified]