(This content is part of the introductory material of the book “The Abolition of Aging”.)

Within our collective grasp dwells the remarkable possibility of the abolition of biological aging.

It’s a big “if”, but if we decide as a species to make this project a priority, there’s around a 50% chance that practical rejuvenation therapies resulting in the comprehensive reversal of aging will be widely available as early as 2040.

People everywhere, on the application of these treatments, will, if they wish, stop becoming biologically older. Instead, again if they wish, they’ll start to become biologically younger, in both body and mind, as rejuvenation therapies take hold. In short, everyone will have the option to become ageless.

Two objections

The viewpoint I’ve just described is a position I’ve reached following extensive research, carried out over more than ten years. My research has led me to become a strong supporter of what can be called “the rejuveneering project”: a multi-decade cross-disciplinary endeavour to engineer human rejuvenation and thereby enable the choice to abolish aging.

But when I mention this viewpoint to people that I meet – as part of my activity as a futurist, or when I catch up with my former colleagues from the smartphone industry – I frequently encounter one of two adverse reactions.

First, people tell me that it’s not possible that such treatments are going to exist in any meaningful timescale any time soon. In other words, they insist that human rejuvenation can’t be done. It’s wishful thinking to suppose otherwise, they say. It’s bad science. It’s naively over-optimistic. It’s ignorant of the long history of failures in this field. The technical challenges remain overwhelmingly difficult.

Second, people tell me that any such treatments would be socially destructive and morally indefensible. In other words, they insist that human rejuvenation shouldn’t be done. It’s essentially a selfish idea, they say – an idea with all kinds of undesirable consequences for societal harmony or planetary well-being. It’s an arrogant idea, from immature minds. It’s an idea that deserves to be strangled.

Can’t be done; shouldn’t be done – in this book, I will argue that both these objections are profoundly wrong. I’ll argue instead that rejuvenation is a noble, highly desirable, eminently practical destiny for our species – a “Humanity+” destiny that could be achieved within just one human generation from now. As I see it, the abolition of aging is set to take its place on the upward arc of human social progress, echoing developments such as the abolition of slavery, the abolition of racism, and the abolition of poverty.

It turns out that the can’t/shouldn’t objections are interlinked. They reinforce each other. It’s often because someone thinks an effort is technically impossible that they object to any time or finance being applied to it. It would be much better, they say, to apply these resources to other philanthropic causes where real progress is possible. That, allegedly, would be the moral, mature thing to do. Conversely, when someone’s moral stance predisposes them to accept personal bodily decline and death, they become eager to find technical reasons that back up their decision. After all, it’s human nature to tend to cherry pick evidence that supports what we want to believe.

Two paradigms

A set of mutually reinforcing interlinked beliefs is sometimes called a “paradigm”. Our paradigms guide us, both consciously and unconsciously, in how we see the world, and in the kinds of projects we deem to be worthwhile. Our paradigms filter our perceptions and constrain our imaginations.

Changing paradigms is hard work. Just ask anyone who has tried to alter the opinion of others on contentious matters such as climate change, gun control, regulating the free market, or progressive taxation. Mere reason alone cannot unseat opinions on such topics. What to some observers is clear and compelling evidence for one position is hardly even noticed by someone entrenched in a competing paradigm. The inconvenient evidence is swatted away with little conscious thought.

The paradigm that accepts human bodily decline and aging as somehow desirable has even deeper roots than the vexatious political topics mentioned in the previous paragraph. It’s not going to be easy to dislodge that accepting-aging paradigm. However, in the chapters ahead, I will marshal a wide range of considerations in favour of a different paradigm – the paradigm that heartily anticipates and endorses rejuvenation. I’ll try to encourage readers to see things from that anticipating-rejuvenation paradigm.

Two abolitions

Accepting aging can be compared to accepting slavery.

For millennia, people from all social classes took slavery for granted. Thoughtful participants may have seen drawbacks with the system, but they assumed that there was no alternative to the basic fact of slavery. They could not conceive how society would function properly without slaves. Even the Bible takes slavery as a given. There is no Mosaic commandment which says “Thou shalt not keep slaves”. Nor is there anything in the New Testament that tells slave owners to set their slaves free.

But in recent times, thank goodness, the public mind changed. The accepting-slavery paradigm wilted in the face of a crescendo of opposing arguments. As with slavery, so also with aging: the time will come for its abolition. The public will cease to take aging for granted. They’ll stop believing in spurious justifications for its inevitability. They’ll demand better. They’ll see how rejuvenation is ready to be embraced.

One reason why slavery is so objectionable is the extent of its curtailment of human opportunity – the denial of free choice to the people enslaved. Another reason is that life expectancy of slaves frequently fell far short of the life expectancy of people not enslaved. As such, slavery can be counted as a major killer: it accelerated death.

From the anticipating-rejuvenation perspective, aging should be seen as the biggest killer of all. Compared to “standard” killers of the present day, such as drunken driving, terrorism, lead fumes, or other carcinogens – killers which rouse us to action to constrain them – aging destroys many more people. Globally, aging is the cause of at least two thirds of human deaths. Aging is the awful elephant in the room, which we have collectively learned to ignore, but which we must learn to recognise and challenge anew.

Every single week the rejuveneering project is delayed, hundreds of thousands more people suffer and die worldwide due to aging-related diseases. Advocates of rejuveneering see this ongoing situation as a needless slaughter. It’s an intolerable offence against human potential. We ought, therefore, to be powerfully motivated to raise the probability of 50% which I offered at the start of this foreword. A 50% chance of success with the rejuveneering project means, equally, a 50% chance of that project failing. That’s a 50% chance of the human slaughter continuing.


In the same way as we have become fervently motivated in recent decades to deal with the other killers mentioned above – vigorously campaigning against, for example, drunk drivers and emitters of noxious chemical pollutants – we ought to be even more motivated to deal with aging. The anger that society has directed against tobacco companies, for long obscuring the links between smoking and lung cancer, ought to find a resonance in a new social passion to uncover and address links between biological aging and numerous diseases. If it’s right to seek to change behaviours and metabolism to cut down bad cholesterol (a precursor of heart disease) and concentrated glucose (a precursor of diabetes), it should be equally right to change behaviours and metabolism to cut down something that’s a precursor of even more diseases, namely, biological aging.

This is a discussion with enormous consequences. Changes in the public mood regarding the desirability of rejuveneering could trigger large reallocations of both public and private research expenditure. In turn, these reallocations are likely to have major implications in many areas of public well-being. Clearly, these decisions need to be taken wisely – with decisions being guided by a better understanding of the rich landscape of rejuveneering possibilities.

An ongoing surge of motivation, wisely coordinated, is one of the factors which can assist the rejuveneering project to overcome the weighty challenges it faces – challenges in science, technology, engineering, and human collaboration. Stubborn “unknown unknowns” surely lie ahead too. Due to these complexities and unknowns, no one can be sure of the outcome of this project. Despite what some rejuvenation enthusiasts may suggest, there’s nothing inevitable about the pace of future medical progress. That’s why I give the probability of success as only around 50%.

Although the end outcome remains unclear, the sense of discovery is increasing. The underlying scientific context is changing rapidly. Every day brings its own fresh firehose of news of potential breakthrough medical approaches. In the midst of so much innovation, it behoves us to seek clarity on the bigger picture.

To the extent that my book can provide that bigger picture, it will have met at least some of its goals. Armed with that bigger picture, readers of this book will, hopefully, be better placed to find the aspect of the overall rejuveneering project where they can make their best contributions. Together, we can tilt that 50% success probability upwards. The sooner, the better.

(Next, consider reading “The discussion ahead”.)

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