Alright, I've lost track of the bookmark and my google-fu is not strong enough with the few bits and pieces I remember. I remember seeing a link to a story in a lesswrong article. The story was about a group of scientists who figured out how to scan a brain, so they did it to one of them, and then he wakes up in a strange place and then has a series of experiences/dreams which recount history leading up to where he currently is, including a civilization of uploads, and he's currently living with the last humans around... something like that. Can anybody help me out? Online story, 20 something chapters I think... this is driving me nuts.