Preservation of genetic information is not at all speculative in the way that preservation of human mental contents is. The two additional technologies are, from what I can tell, much closer to our current capabilities than the technology needed to retrieve the information in a vitrified brain.
(Hopefully, that’s what you were talking about.)
ETA: This history of the relationship between cryonics and cryobiology is relevant and a great read.
Preservation of genetic information is not at all speculative in the way that preservation of human mental contents is. The two additional technologies are, from what I can tell, much closer to our current capabilities than the technology needed to retrieve the information in a vitrified brain.
(Hopefully, that’s what you were talking about.)
ETA: This history of the relationship between cryonics and cryobiology is relevant and a great read.