6 min
Cryonics starts with a simple idea: if the structure of a brain, tissue, or organ is preserved well enough, future medicine may have more options than we have today.
It is not magic or religion. It is a set of biomedical and engineering tasks: rapid cooling, cryoprotectants, logistics, storage, and damage assessment.
The honest boundary is clear: human revival cannot be promised today. What can be pursued is structural preservation and experiments that show which systems can become reversible.