"The Redaction Machine" by Ben

https://www.lesswrong.com/posts/CKgPFHoWFkviYz7CB/the-redaction-machine

On the 3rd of October 2351 a machine flared to life. Huge energies coursed into it via cables, only to leave moments later as heat dumped unwanted into its radiators. With an enormous puff the machine unleashed sixty years of human metabolic entropy into superheated steam.

In the heart of the machine was Jane, a person of the early 21st century.

From her perspective there was no transition. One moment she had been in the year 2021, sat beneath a tree in a park. Reading a detective novel.

Then the book was gone, and the tree. Also the park. Even the year.

She found herself laid in a bathtub, immersed in sickly fatty fluids. She was naked and cold.