I was thinking more along the lines of technology that can scan back through time, and record a person's neural patterns at the point of death. This would requi

I was thinking more along the lines of technology that can scan back through time, and record a person's neural patterns at the point of death. This would require being able to open at least observation-only portals through time, or that there exist some high-fidelity natural recordings of events on Earth encoded in some substrate in the universe, that last millions of years, and that are high-resolution enough to enable full copying of the past state of a human brain, that one day humanity could recover. How such a feat could be accomplished, I don't know, but capabilities that seem impossible today may become possible with millions of years of technological progress, especially if the exponential phase of technological progress continues for a while longer.