By the way, I really hope that you consider synthesizing concepts. As an exercise, Carroll concludes from his premises that:

There is no life after death, as the information in a person’s mind is encoded in the physical configuration of atoms in their body, and there is no physical mechanism for that information to be carried away after death.

But consider the following quote from Strange Loop at the end of Chapter 18, “The Blurry Glow of Human Identity”. Remember, Hofstadter is a physicist, arguably as influential as Carroll in quantum theory, and no less of an anti-dualist or materialist. So, as an exercise, synthesize for yourself an understanding of why Hofstadter says:

In the wake of a human being’s death, what survives is a set of afterglows, some brighter and some dimmer, in the collective brains of all those who were dearest to them. And when those people in turn pass on, the afterglow becomes extremely faint. And when that outer layer in turn passes into oblivion, then the afterglow is feebler still, and after a while there is nothing left. This slow process of extinction I’ve just described, though gloomy, is a little less gloomy than the standard view. Because bodily death is so clear, so sharp, and so dramatic, and because we tend to cling to the caged-bird view, death strikes us as instantaneous and absolute, as sharp as a guillotine blade. Our instinct is to believe that the light has all at once gone out altogether. I suggest that this is not the case for human souls, because the essence of a human being — truly unlike the essence of a mosquito or a snake or a bird or a pig — is distributed over many a brain. It takes a couple of generations for a soul to subside, for the flickering to cease, for all the embers to burn out. Although “ashes to ashes, dust to dust” may in the end be true, the transition it describes is not so sharp as we tend to think.