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First human head transplant in 2017?
Transplantation of tissue — including organs — from one human (or nonhuman) to another is an amazing advance in medicine that has now saved many lives. Complex organs including the heart and liver are now routinely transplanted, and in many cases even quite complex severed nerves can be reattached.
Much more audacious is the possibility of transplanting a human head. (Or should it be considered a full-body transplant?) The difficulties are obviously daunting: not just the spine, but major arteries, throat, etc., must all be reattached while keeping the brain alive.
Nonetheless, this procedure has been seriously proposed by Dr. Sergio Canavero, who currently claims that he will attempt a head transplant in 2017 on a Chinese man if he is given permission (and funding). See this summary for more details, as well as an additional piece on the (low) likelihood of the operation's success.
By the end of 2017, will a human head transplant operation be performed?
Resolution is positive regardless of the survival of the patient after the operation. (We may later launch a conditional sister question about the survival probability.)
Metaculus help: Predicting
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The basics of predicting are very simple: move the slider to best match the likelihood of the outcome, and click predict. You can predict as often as you want, and you're encouraged to change your mind when new information becomes available. With tachyons you'll even be able to go back in time and backdate your prediction to maximize your points.
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Note: this question resolved before its original close time. All of your predictions came after the resolution, so you did not gain (or lose) any points for it.
Note: this question resolved before its original close time. You earned points up until the question resolution, but not afterwards.
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Metaculus help: Community Stats
Use the community stats to get a better sense of the community consensus (or lack thereof) for this question. Sometimes people have wildly different ideas about the likely outcomes, and sometimes people are in close agreement. There are even times when the community seems very certain of uncertainty, like when everyone agrees that event is only 50% likely to happen.
When you make a prediction, check the community stats to see where you land. If your prediction is an outlier, might there be something you're overlooking that others have seen? Or do you have special insight that others are lacking? Either way, it might be a good idea to join the discussion in the comments.