There have been legal precedents in people declared dead in absentia for centuries (e.g. people who were lost at sea, or ran away, who later reappeared). An ext

There have been legal precedents in people declared dead in absentia for centuries (e.g. people who were lost at sea, or ran away, who later reappeared). An extension to a doctor declaring someone dead when they are not would be a clear logical step. If humanity survives long enough for revival to be possible, it will have already solved overpopulation problems, as otherwise it would have become extinct in the not-too-distant future.