[I'm using the word "consciousness" to basically mean "capability to have an experience".] Assume there was a machine that could instantly destroy and/or create a perfect replication of you. It does both of these functions and incinerates you, making a perfect copy of you 10 feet away. Most would agree that the original "you" would die when you were destroyed, and a brand new life would begin afterwards. Otherwise, what the hell happens if it makes a clone of your self while you're still alive? Do you experience having two selves? The copy of you would be a brand new consciousness that was just born, even though it would retain all of your information and fully believe that it was the original "you." But the question is: why does the original you not experience being revived? If I walk 10 feet from point A to point B, I am now 10 feet away than I was a minute before, but otherwise the exact same object. If, instead, I teleport from point A to point B, I am still 10 feet away than I was a minute before, but otherwise I am the exact same object... except I'm dead, and an imposter gets to live my life. So if your bodies in either of these scenarios are materially the same thing, what was left behind? Why, if I teleported, am I dead and replaced if the universe looks basically the same as it would had I walked? What's the material difference? Even recreating a dead person's brain and restoring it artificially would, theoretically, leave them dead and replace it with a new consciousness, because the original "them" died, correct? If this is the case, then your consciousness is strictly the stream of chemical reactions inside of your brain, rather than a physical component of the brain itself. If one were interested in finding a way to have their consciousness survive past the death of their brain, they would simply have to continue the chemical reactions taking place inside? Like have an organism's brain hooked up to some artificial "blank brain" and allow reactions to leak into the new brain? Or create an artificial brain ahead of time and have one consciousness leak into it?