Cryonics is the practice of preserving human bodies at extremely low temperatures after legal death, with the hope that future medical technologies can revive them and restore them to health. While cryopreservation techniques have seen some success in preserving individual cells and small tissues, the successful revival of a whole human being, particularly with their memories and cognitive functions intact, has not yet been demonstrated. The feasibility of successfully reviving a cryonics patient, and the timeframe in which this may be achieved, remain uncertain.

Will a cryonics patient be successfully and biologically revived, demonstrating the restoration of their physical health and cognitive functions, before January 1st, 2040?

Resolution criteria:

This question will resolve to "YES" if, before January 1st 2040, a cryonics patient is publicly and credibly documented to have been successfully and biologically revived, as evidenced by:

1. The patient's physical health being restored to a stable, functional state, which must include:

   a. Restoration of vital signs, such as heart rate, blood pressure, and respiration.

   b. The ability to maintain homeostasis without ongoing external life support.

   c. The regeneration or repair of any damaged tissues or organs.

2. The patient's cognitive functions being restored to a level consistent with their pre-cryopreservation state, which must include:

   a. The ability to form and recall both short-term and long-term memories.

   b. The capacity for reasoning, problem-solving, and decision-making.

   c. The preservation of the patient's personal identity, as demonstrated by the retention of autobiographical memories and recognition of friends or family members.

3. The successful revival must be achieved using a biological method or intervention, such as:

   a. The application of advanced regenerative medicine techniques, including the use of stem cells, tissue engineering, or gene therapy.

   b. The use of nanotechnology or other molecular-scale repair mechanisms.

   c. Any other biological or medical approach that restores the patient's physical health and cognitive functions without relying on artificial or non-biological systems.

A successful demonstration must be accompanied by:

1. A publicly accessible report or documentation detailing the methods, technologies, and interventions used for the patient's revival and restoration of physical health and cognitive functions.

2. Independent validation of the results by at least two separate entities with expertise in cryonics, neuroscience, regenerative medicine, or related fields. These entities can be research groups, institutions, or companies.

3. The publication of the findings in one or more peer-reviewed scientific journals.

4. A follow-up period of at least six months after the revival, during which the patient's physical health and cognitive functions are monitored and documented to ensure the stability and durability of the restoration.

I will use my discretion when resolving this question, possibly in consultation with experts.