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Here’s my take on why the overpopulation objection to rejuvenation is morally unacceptable.


In this article, I’ll try to show that the overpopulation objection against rejuvenation is morally deplorable. For this purpose, whether or not the world is overpopulated or might be such in the future doesn’t matter. I’ll deal with facts and data in the two other articles dedicated to this objection; for now, all I want is getting to the conclusion that not developing rejuvenation for the sake of avoiding overpopulation is morally unacceptable (especially when considering the obvious and ethically more sound alternative), and thus overpopulation doesn’t constitute a valid objection to rejuvenation.

I’ll start with an example. Imagine there’s a family of two parents and three children. They’re not doing too well financially, and they live packed in a tiny apartment with no chances of moving somewhere larger. Clearly they cannot afford having more children, but they would really like having more anyway. What should they do?

The only reasonable answer is that they should not have any more children until they can afford having them. Throwing away the old ones for the sake of some other child to be even conceived yet would be nothing short of sheer madness.

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Church mentioned human trials in 2 years a few months ago. this is the first I have seen him say that in 10 years the reversal of aging will be a reality. That’ll make me 55. Hurry.


While discussing creating a hybrid elephant — wooly mammoth using CRISPR genome editing, Harvard’s George Church predicted that reversal of aging will be a reality within ten years.

Nextbigfuture suspects that this could mean clearly reversing aging in mice cells as a proof in principle in ten years. But evidence suggests Church does mean full and significant aging reversal in humans within ten years. In March of 2016 Church said, aging should be thought of as a program that might be reversed, noting, “If we could take one of my skin cells and turn it into an embryo-like cell and turn it back into a skin cell it has reset almost all of the developmental indications of age. We have 65 gene therapies that are being test in mice and larger animals. If they go well we will go straight into human trials. That could be as little as two years…

In June 2016, Church indicated that first phase I aging reversal human trials could be in a year or two.

For those interested in life extension and bionic / cyborg type enhancements, this CMU Robotics Institute Seminar gives an overview of the background and current developments in artificial vision. José Alain Sahel MD is a world leading ophthalmologist with a lengthy bio and numerous honors and appointments.

In the future, if you’re going blind, these sight restoration technologies may be used to remediate your vision loss.

Three major ideas are covered. 1) Implanting arrays of tiny 3-color LEDs under a failed retina to stimulate still-okay cells, and 2) using gene therapy to express a novel photoreceptor, borrowed from algae, to restore a form of sight to failed cells. These can be done together. Lots of studies in mice, primates, and humans. Some coverage is also given to 3) directly implanting electronics in the brain to send complete images to vision centers, but this is still at an early stage.

None of this is anywhere near total restoration. The patients can make out a few words for the first time. And unlike normal vision, the range of light intensity levels remains very narrow. But obviously it’s much better than nothing and will get better over time.

As a point of humor, he tells the story of one of his blind patients who totally redesigned one of his experiments for him.

Not too shock by this given other transplant patient’s stories of memories, etc.


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There are a lot of outrageous claims being made within the halls of neuroscience and artificial intelligence. Whether exaggerations, wishful thinking, the dreams of the egocentric and megalomaniacal to be immortal, or just drumming up funding for a never-ending round of “scientific investigation,” the year 2045 seems to always be cited as a target date.

Ray Kurzweil popularized the notion of The Singularity – the threshold when computing power would match or exceed the human brain and human biological systems – in his 2006 book The Singularity is Near: When Humans Transcend Biology. In that book, and subsequent articles, he theorized that 2045 would be the far end of when we could expect full integration of human and machine that would create immortality.

A great Q&A, especially with the deathists that crop up.


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