Dangerous Minds

Dangerous Minds is a main story quest and achievement/trophy in Fallout 4.

Detailed walkthrough
Lounging Around At The Memory Den

Kellogg has kindly allowed you to use a bit of his brain—the cybernetic brain augmenter —to delve deep into his memories. Gather it from Fort Hagen (as part of the previous quest, Reunions) if you haven't already.

Follow Nick Valentine’s advice and locate Doctor Amari. This involves a trip into Boston, through the ruins of the Financial District, to the rough-and-tumble fortified settlement of Goodneighbor. Greet the locals, then head to the Memory Den. Irma owns this establishment.

Down in the basement, converse with Doctor Amari. After Nick Valentine volunteers to help out, you’re invited to sit in the lounger to experience snippets of Kellogg’s past.

Memories
Most memories have a few monologues where Kellogg will go into more detail about specific thoughts.

Childhood
Me, Dad, Radio, Mom

Young adulthood
Me, Sarah, Window, Mary

Corridor
There are no monologues in this memory.

Bar
Me, Wastelander (each have unique monologues), Bartender

Institute
Me, Synth, Institute Agent

Vault
Me, Institute Scientist, Cryopod, Primary Subject, Backup Subject

Final
Me, Shaun, Institute Courser, Dr. Virgil's File (once it's placed on the desk)

Bugs

 * Sometimes, power armor worn by Valentine can change ownership to the NPC after exiting the lounge chair. If the player tries to enter the power armor, a "steal power armor" prompt will replace the "enter power armor" prompt. Valentine will turn hostile if entered.
 * Sometimes, the character might be considered in combat, making sitting impossible. To fix this, fast travel to a safe location then return Memory Den.
 * Saving and loading inside the memory will make the quest impossible to complete. Dr. Amari will show as "Busy" after exiting the memory lounger and the waypoint will be beneath the floor. To avoid this problem: load a save before entering the memory lounger and run through to the exit.

Mentes peligrosas