Organ transplantation has become an important life-saving means, but can you imagine that human heads can also be transplanted? This is not a science fiction movie. It may become a reality in two years. Recently, according to media reports, an Italian surgeon named Sergio Canavelo proposed this plan. William Matthews, an American neurologist and plastic surgeon, believes that the concept of "head transplantation" proposed by Canavero is very advanced and may be applied to many medical fields, but it is not yet possible.