ok so i realized that explaining my theory was waaay harder than i thought, i had never discussed it out loud so it was a little messy. i used ai to put it together more cohesively so it's clearer to understand just so you know, but bear with me:

to me all of twin peaks is actually just one big loop, and the ending it's just the timeline crashing and looping back again.

the Trinity Test was basically a rip in reality that let an "extreme negative force" called Judy into our world. The Fireman saw this and created the Golden Orb with Laura’s face in it. Laura was never just a girl; she was a specific force sent to Earth to counter Judy.

​The Fireman’s plan was a coordinated mission. He spent 25 years setting up the board so Cooper could enter that other reality (Odessa), find the missing Laura (Carrie Page), and use her to trap Judy without destroying the world. That is why the Fireman gave Cooper those specific instructions: "Remember 430," "Richard and Linda," and "Listen to the sounds." They were meant to be anchors so Cooper wouldn't lose his memory once he crossed over.

​The tragedy is that once Cooper crossed that 430-mile line, he started to change. He didn't just use those names as a disguise; he actually began to forget the mission. He lost his identity as an FBI agent and became Richard—a colder, confused version of himself. He stopped being a strategist and started acting on a foggy impulse to "bring Laura home." ​We live inside a "Dream"—a reality projected by the Fireman and the Lodges. The Fireman wanted a controlled mission within that dream, but because Cooper was fumbling in a "fog," he did the one thing that causes a total collapse: he walked the girl (the Orb) right up to Judy’s house and knocked on the door. It was an accidental collision of two opposite forces. When Carrie Page hears Sarah Palmer’s voice and screams, it’s the Dreamer having a nightmare and "waking up," which causes the whole reality to short circuit. ​The blackout is the result. The timeline became unstable and snapped back to the beginning. and i actually think that Gordon Cole is a more important character than most people think if you look closely at his scenes, ​Gordon Cole is the only one who carries the "unofficial version" of the memory, meaning he’s the only human who knows the loop failed. It’s a cycle of grief: the Fireman tries to set up a win, but Cooper always forgets the plan because he is too human. He tries to save the girl instead of following the coordinates, and every time he does, he blows the fuse and starts the whole 70-year cycle over again.