The idea of people who do cryonics is that better medicine from tomorrow may be used for a cryonics patient , so the person may be alive in a different sense than the law uses today . Cryonics advocates complain that theological dismissal of cryonics because it is interment is a circular argument because calling cryonics `` interment '' presumes a priori that cryonics can not work . They believe future technical advances will validate their view that cryonics patients are recoverable , and therefore never really dead .