At his blog, futurist Ray Kurzweil asks questions about “the hypothesis that chemical brain preservation may inexpensively preserve the organism’s memories and mental states after death.” An excerpt:

“Would you choose chemical brain preservation at death if it was widely available, validated, and inexpensive? If not, why not? Would you do it to donate your brain to science? Your memories to your children or others who might want them? Would you be willing to come back in person, if that turns out to be possible? If it is sufficiently inexpensive, would it be best to preserve your brain at death, and let future society decide if either your memories or your identity are ‘worth’ reanimating?”