An essay in five removals

Terminal Value

What Death Was Doing for the Economy, and What Happens When We Stop It

Samuel Safahi · 13 chapters · 39,600 words

The claim

Economics treats death as a boundary condition and never inspects it.

Death is quietly doing at least five jobs. It sets the discount rate. It turns over capital. It turns over ideas. It prices risk. And it creates vacancy.

Each one is load bearing. None of them has a backup. We have no institution standing by to redistribute capital if inheritance stops, no mechanism to rotate intellectual authority if the holders never vacate, and no procedure for opening a position that nobody has left.

These functions were never designed, so they were never given redundancy. They emerged from a biological fact so reliable that nobody thought to ask what would happen if it changed.

Radical life extension removes all five at once. The result is not utopia and not catastrophe but something stranger: a civilization that is wealthy, safe, static and permanently locked in.

Figure 0

What the beam is holding up

Five columns under one slab, and no redundancy in any of them. everything built on top the priceof time capitalturnover ideaturnover the priceof risk vacancy mortality, doing all five at once, by accident
We are removing a beam. The beam was holding something up. Nobody has checked what.Chapter 1, The Boundary Condition

Figure 1

The variable that has never varied

Life expectancy has climbed. The ceiling has not moved. 406080100120 1850190019502000 The ceiling 122 years unmoved since 1997 from age five at birth 81 and 82
Adult life really was extended, and anyone who tells you the whole story is dead babies is skipping the evidence. What did not move is the ceiling. Jeanne Calment died in 1997 at 122. Nobody has come within three years of her since.Shape indicative; endpoints as stated in Chapter 2

Chapter 2 · the premise

You cannot notice a variable that has never varied

Mortality has been the most stable input in all of economics. Population, technology, energy prices, institutions, trade, the money supply: all of it swings around, and every swing generates a literature.

The human lifespan has not swung. You cannot run a regression on a constant. It has no variance to explain, so it falls out of the analysis, not through carelessness but because there is nothing there for the analysis to grip.

The premise of this book is set as weakly as it can be set. Not immortality, not uploading, not any particular biotechnology. Only that healthy human lifespans eventually reach somewhere between 150 and 300 years.

And the effects do not wait for that. Every one of the five jobs depends on mortality continuously rather than as a switch, which means the mild early version should already be visible. It is.

An addition · not part of the book

So when?

Chapter 2 declines to give a date, on purpose, and gives two reasons. Forecasts in this area have a dismal record in both directions. And the date does not matter for the argument, because the five jobs are being performed right now.

Both reasons are good, and the refusal is the more honest position. But it is the first thing anybody asks, so here is a guess, clearly marked as an addition by whoever built this site rather than a claim the book makes.

The short version: probably not for a very long time, and you will not be able to tell when it happens.

A guess

Two curves, and the gap between them

Estimated probability that aging is brought under control, and that a long healthy life is actually demonstrated. 0%25%50%75%100% 205021002150220022502300 aging brought under control 150 healthy years demonstrated the gap is the proof and it cannot be closed
The upper curve is the chance that aging has been brought under medical control. The lower one is the chance that a hundred and fifty year healthy life has actually been demonstrated in a person. The second cannot catch the first, because demonstrating a hundred and fifty year lifespan takes a hundred and fifty years. Neither curve reaches certainty, because never is a real possibility and pretending otherwise would be the same error the book is complaining about.Author of this page, not of the book. Numbers are judgement, not a model

Why the gap never closes

This is the part that makes dating the question almost meaningless, and it is a consequence of the book's own framing rather than a separate objection.

Suppose the biology were finished tomorrow. A treatment exists, it works, and it is available. How would anyone know it delivers a hundred and fifty healthy years?

Somebody has to live them. There is no shortcut, no biomarker that substitutes for the outcome, and no animal model that settles it, because the whole history of this field is interventions that worked beautifully in short lived animals and did nothing in people.

So the earliest possible date for a confirmed hundred and fifty year healthspan is a hundred and fifty years after the treatment works, and the treatment does not work yet. Everything before that is inference from surrogate markers, which is exactly the kind of evidence that has been wrong before.

A guess

Milestones, in the order they would have to happen

Milestone estimates, with the range each guess spans. 20502100215022002250 A drug slows aging in a human trial 2048 Aging recognised as a treatable indication 2072 Calment’s 122 years is beaten 2090 150 healthy years, demonstrated 2215 Aging removed as a cause of death 2260 bars are where the guess sits, not a confidence interval anyone computed
The first two are ordinary science and regulation and could move quickly. The third is the one to watch, because it is unambiguous and needs no interpretation: Jeanne Calment died in 1997 at 122, and nobody has come within three years of her since. The moment that record falls by a clear margin is the moment this stops being speculative. The last two are separated from the rest by the verification problem above.Medians and ranges are the page author’s judgement

And it still would not be immortality

The phrase people reach for is biological immortality, and Chapter 6 argues that curing aging does not deliver it. It converts it from a biology problem into a risk management problem, and the risk management version is harder.

Remove aging entirely and background accident risk remains, at roughly one in two thousand per year for a young adult in a wealthy country. Any number below one, raised to a high enough power, goes to zero. That gives an expected life on the order of two thousand years, with half of a cohort gone by about year fourteen hundred.

Which is a long time and is not forever. Every death in that world is an accident, which means every death is, in the strict sense, one somebody could have prevented.

What would change this guess

Pushed later: another decade of the maximum human lifespan not moving. A large partial reprogramming result that fails to replicate. Continued absence of any approved indication for aging itself.

Pulled earlier: a verified human death above 125. A drug that moves several age related endpoints at once in a properly powered trial. A regulator accepting aging as something a treatment can target.

The honest summary is that the distribution is enormously wide, that its left tail is thinner than enthusiasts believe and its right tail longer than sceptics believe, and that the argument in this book does not depend on any of it. That last part is the point Chapter 2 is making, and it is the reason the book declines to do what this section just did.

Job one · Chapter 3

The price of time

In 1648 a Dutch water authority issued a bond on goatskin to pay for dike repairs. Not for ten years. Not for a hundred. Forever. It still pays, and Yale owns one of the five known survivors.

A perpetual bond has no maturity, which means the entire question of what it is worth reduces to a single number. Move the discount rate and watch what happens to every permanent thing there is.

Interactive

What a perpetuity is worth

The value of a perpetuity as the discount rate falls toward zero. 050k100k150k200k 1%2%4%6%8%10% discount rate
$20,000

Ordinary. This is the world valuation was designed for.

An asset paying $1,000 a year, forever. At ten percent it is worth ten thousand dollars. At one percent, a hundred thousand. At zero there is no answer. Not a very large answer. No answer.Drag the rate. The formula is value = payment divided by rate

Figure 2

Forty years of drift nobody can fully explain

Estimates of the natural real rate of interest, 1990 to 2024. 0%1%2%3% 1990200020102020 forty years of drift
Real rates across the developed world have been falling structurally, not cyclically. The decline preceded the 2008 crisis, survived it, and continued through wildly different policy regimes. Demographics appears in essentially every serious treatment.Shape indicative, after Laubach and Williams; see the notes

I am not claiming that longevity explains the fall in real rates. I am claiming something weaker and harder to argue with: that a mainstream body of research finds longer lives push real rates down, that real rates have gone down over exactly the period in which healthy old age has been extending, and that essentially nobody has asked what happens if the input keeps moving.

At zero, there is no answer. Not a very large answer. No answer.

Chapter 3 · The Price of Time

Job two · Chapter 4

Seventeen thousand times

Capital earning five percent a year after inflation multiplies about four and a third times over a working career. That is the arithmetic of a successful life.

Over two hundred years, the same five percent multiplies your money by about seventeen thousand. Not seventeen thousand dollars. Seventeen thousand times, in real terms, at an unremarkable rate of return, with no brilliance required at any point. Just continuity.

The only reason we do not observe absurd outcomes is that nobody has ever had an extraordinary period. The compounding always gets cut. The owner dies, the estate splits, the tax lands.

17,000x five percent real, compounded for two hundred years
1983 the year South Dakota abolished the rule against perpetuities, and the race began

Figure 3

One dollar, five percent real, two centuries

One dollar at five percent real, over two hundred years. Log scale. 1x10x100x1,000x10,000x 0y50y100y150y200y 4.3x a career 17,000x
For four hundred years, common law jurisdictions maintained a rule whose only purpose was to force property back to the living. In about thirty years a significant part of the developed world took it apart in exchange for trust management fees. We disabled the anti permanence machinery first. The permanence is arriving second.Log scale. Author’s calculation, Chapter 4

Figure 4

Four hundred and fifty two sudden exits

Four hundred and fifty two elite life scientists who died while still active. 452 sudden exits · one field each
Elite life scientists who died prematurely while still active. An unexpected death is close to a natural experiment: it removes a person from a field without the gradual withdrawal that would otherwise muddy the picture.Azoulay, Fons-Rosen and Graff Zivin, American Economic Review, 2019

Figure 5

What happened to those fields afterward

Publication flow before and after a star scientist dies. while they held the field after the death Their collaborators publish less Everyone else +8.6% and the new work is disproportionately highly cited
Researchers who had never worked with the deceased began publishing in the area at a higher rate, and it did not fade. Their papers drew on different prior work and were disproportionately highly cited. The ideas had been out there the whole time. What changed was that the position blocking them became vacant.Same study

Job three · Chapter 5

The funeral principle

Max Planck wrote that a new scientific truth does not triumph by convincing its opponents. The line gets a laugh at conferences. Nobody treats it as what it is, which is a testable empirical claim about how knowledge propagates through a profession.

It has been tested. The result is not funny.

And the mechanism is not villainy. An eminent researcher sits on the grant panels, referees for the journals, advises on hiring, trains the next cohort and writes the review articles that define the open problems. Suppose they sincerely believe a line of inquiry is a dead end. They will rate that application slightly lower, in good faith, because they honestly think it is less promising.

There is no bad actor to remove. There is only the ordinary operation of authority, and the track record was built in the old paradigm.

Job four · Chapter 6

Nobody goes to space

In July 1969 a White House speechwriter drafted a eulogy for two men who would suffocate on the Moon while the planet listened. The speech went into a drawer. NASA lit the rocket anyway.

The usual explanation is character. People were braver then. I want to offer one that is less flattering and more useful. They were cheaper. Not cheaper as people. Cheaper as assets.

Think of a life as a stream of future years, the way a bond is a stream of payments. A seventy year old is a short bond. A healthy twenty five year old is something like a fifty year bond. Now cure aging, and the person in front of you is a perpetual bond.

Every bit of what a perpetuity is worth lives in the chance that it gets interrupted. Armstrong was not braver than a person who will live a thousand years. He was shorter dated. He was betting forty expected years on a coin flip. The thousand year person is asked to bet a perpetuity on the same flip.

Curing aging does not give you immortality. It converts immortality from a biology problem into a risk management problem, and the risk management version is harder. Biology is a finite opponent. Accidents are not.

Figure 6

What kills you when nothing else does

Survival with aging cured and only background accident risk remaining. 0%25%50%75%100% 01k2k3k4k years half gone by year 1,386 one in 2,000 per year, forever
Suppose the aging term goes to zero and only background accident risk is left, at roughly one in two thousand per year. Any number below one, raised to a high enough power, goes to zero. Over a long enough horizon ruin is not a risk. It is a certainty with a waiting time.Author’s arithmetic, shown so you can see how thin it is

Interactive

The price of one launch

Expected life lost 0.20 years $60,000

The underwriter starts asking questions.

The Shuttle lost two crews in a hundred and thirty five flights, about one in ninety. Be generous to the future and call it one in ten thousand. For someone with forty years left that is nothing. For someone with two thousand years left it is a fifth of a year of expected life, priced at a few hundred thousand dollars a year, per person, per launch, before anything else is counted.Risk premium at $300,000 per life-year, per Chapter 6

Every civilization rich enough to reach the stars is too rich to go.

Chapter 6 · Nobody Goes to Space

Job five · Chapter 7

Vacancy

A hermit crab does not grow a shell. It finds one. When a large empty shell appears on a beach, the biggest crab that can use it moves in and abandons its old one, and the next crab down takes that, and so on. One object became available and a dozen animals improved their position.

Harrison White proposed studying promotion the same way. Follow the vacancy rather than the person. The number of promotions in a system is not determined by how many talented people it contains. It is determined by how many openings appear, and openings come from exactly two sources: growth and exit.

Retirement is not an independent institution. It is a derivative of mortality, and it evaporates for a person of two hundred in perfect health who is, by any measure we currently use, the most qualified person in the building.

If the service rate goes to zero you do not have a slow queue. You have a queue that is not moving, and the waiting time is not long. It is undefined.

Figure 7

One exit, six moves

A vacancy chain: one exit at the top moves everyone below it. Chair Director Senior Associate Junior Entering one exit six moves no exit, no chain, and nothing below it moves at all
The person moves up and the vacancy moves down. They are the same event described from two directions.After Harrison White, Chains of Opportunity, 1970

Figure 8

From a fifth of the field to a twentieth

Share of NIH principal investigators aged 36 or under. 0%5%10%15%20% 18% 1983 3% 2010 principal investigators aged 36 or under
The share of principal investigators on major NIH grants who were thirty six or younger. Over the same period the average age at first independent grant rose from about thirty six to about forty two, and has sat there since. Not a slower ladder for the young. The young, as a category, mostly stopped appearing.Chapter 7; several causes operate through the same channel

Part III · the counterparty

The forkable worker

At exactly the moment we are removing mortality from the people who own things, we are manufacturing a new class of economic actor whose lifespan is a setting in a configuration file.

Figure 9

Fork four ways, keep one

An agent forked four ways: one kept, three ended, at no ceremony. one agent ended kept ended ended lifespan is a setting in a configuration file
Nothing dramatic occurred. No ceremony attended the deletion of the three. Anyone who builds these systems does it several times a day without giving it a moment’s thought, and the vocabulary is aggressively mundane. You spawn an agent. You checkpoint it. You fork it. You kill it.Chapter 9, The Forkable Worker

Every economic actor in history has had a lifespan that was given to it. For the first time we have made a participant whose mortality is a design parameter.

And every job death has been doing can be performed deliberately on something forkable. Horizon is configured rather than felt. Holdings are wound up by a clause rather than by four hundred years of property law. A model is retired and replaced with one trained on newer material, which is a deployment rather than a delicate matter of persuading an eminent authority to update.

We are removing mortality from one side of the economy and inventing it on the other.

There is a hole in the middle of this and it is better to point at it than paper over it. All of the above assumes ending an agent stays cheap. Nobody knows whether that is true, the question is genuinely hard, and the economic pressure to answer it in the convenient direction is going to be immense.

Figure 10

The asymmetry

Two populations, and how the properties of mortality get divided between them. The permanent class Holds the capitalHolds the senior positionsDiscounts at nearly zeroCannot afford any riskDoes not turn over The mortal class Does the workTakes the riskHorizon set by its operatorCopied when useful, ended when notTurns over by design
Every property that death used to distribute across the whole population is now distributed between two populations. One gets permanence, ownership and safety. The other gets mortality, labour and risk. Nobody chose this. It is the natural result of two technologies arriving at the same time, each solving its own problem, neither aware of the other.Chapters 9 and 10

Part IV · Chapter 11

The Serrata

Before it froze, Venice had invented a machine for making poor men rich. The colleganza let a man with nothing but nerve take a ship to Constantinople, do the trading, survive the Mediterranean, and come home with a quarter of the profit. It converted courage into equity, and any notary in the city could write one.

Then the families who had arrived stopped the door behind them. In 1297 the Great Council was closed to anyone whose family was not already inside it. Having sealed the political door, the new hereditary nobility went after the economic one, and the instrument that had carried them up fell away beneath them.

Venice did not collapse. It lasted another five hundred years, stayed wealthy, stayed beautiful, kept its art and acquired more of it. It simply stopped mattering. When Napoleon ended the Republic in 1797 he met essentially no resistance, because there was nothing left with an interest in resisting.

Figure 11

Five centuries of nothing further happening

Venice: mobility, then the closing, then five hundred years of nothing. the colleganza courage into equity, any notary could write one 1297 La Serrata the council closes 1797 Napoleon no resistance left five centuries, rich and beautiful, nothing further happens
This is the right historical model, and it is not the apocalyptic one. The frozen world is a pleasant place to live if you are already inside it, which is exactly what makes it hard to argue against and easy to drift into.Puga and Trefler on the Serrata; see the notes

The honest column

Nobody dies. Take a moment with that, because everything else is second order next to it. The single greatest source of human suffering across all of history is that people we love stop existing, and in this world that stops happening. It is safe. It is rich. It is patient, and a society that discounts the future at nearly zero will finally build the seawalls with two hundred year payback periods.

What is missing is not a specific good thing. It is the category. The frozen world lacks the mechanism by which the arrangement of things could come to be different from how it currently is. The word for that is not decline. The word is closure.

Part V · Chapter 12

Reinventing the funeral

There is a correct order of operations for removing a load bearing wall. You shore it first. Then you place the beam. Then you take out the wall, and the building never knows anything occurred.

What death actually does, mechanically, is convert permanent claims into temporary ones. Your property, your position, your authority, your seat, all of it reverts. You held a lease and called it ownership, and the term was your life. So every replacement takes the same form.

Everything death used to take back by force, we will have to take back by contract.

Pricing permanence

Stop selling permanent claims on scarce permanent things. Hong Kong already runs this way: every square metre is leased from the government, and the leases expiring in 2047 were extended by gazette notice rather than by anyone’s discretion. Tax the flow, not the stock.

Leasehold has a failure mode. As the term ends, the holder stops maintaining the property.

Turning over capital

Restore the rule against perpetuities at a level that cannot be competed away, which means federally. The serious version is a self assessed tax on declared value, which replicates the one property of death that matters: it does not care who you are.

It is horrible for anything you love, and that intuition is correct rather than sentimental.

Turning over ideas

Term the position, not the person. Fixed terms on the seat on the grant panel, the editorship, the chair of the review committee. An eminent scientist of two hundred stays eminent. They simply do not also decide which applications succeed, for the two hundredth consecutive year.

Rotation costs expertise. But we already pay that cost in full at every death, and involuntarily.

Who may take a risk

This is the ugly one. A legal category for consented high risk activity is precisely how every exploitative labour arrangement in history described itself. The only fix is to actually pay the premium Chapter 6 calculates, denominated against the life expectancy of the person accepting it.

A society that will not pay that price does not get the frontier. That is a legitimate outcome, and better than getting it by not paying.

Opening positions

Term limits as an economic instrument rather than a political one, attached to the seat rather than the sector. Leaving a board after twelve years does not bar you from working. It returns the position to circulation.

Forced churn advantages the already connected. A system that rotates badly still beats one with no mechanism at all.

The defect in all of it

Each proposal has to be adopted by the people it constrains. That has always been solvable, for one reason: nobody knew which position they would end up in. Death is what puts the veil of ignorance there, and removing it lifts the veil permanently.

Everything here is easy to enact today and impossible to enact later. That is the whole argument.

Figure 12

Where the value actually sits

Where the value of an enterprise actually sits. 25% five years you argue about 75% or more everything after, bundled into one number by a formula about forever terminal value
In a standard five year forecast, the bundled residual commonly runs to about three quarters of enterprise value, and practitioners are taught to flag it above eighty percent because the valuation has stopped being about the business and become a bet on a formula. Most of what any durable thing is worth lies past the horizon of anyone’s competence to forecast.Chapter 13, Terminal Value

Chapter 13 · the close

The people who built for strangers

Cologne Cathedral was begun in 1248 and finished in 1880. Every person who laid the first stones died without seeing a roof. Their children died. Their grandchildren died.

We usually call that altruism, or vision. Look at it as an accountant and a colder explanation appears. If you are going to die, you cannot consume the future. It is not available to you at any price, which means the only relationship you can have with it is to give something to it.

Death converted the entire terminal value of civilization into a gift, because a gift was the only transaction available.

The pessimistic answer is not that the cathedral stops being built. It is that the cathedral stops being given. The forest is planted as a holding, by an owner who will harvest it personally in year two hundred.

Longevity buys you Earth. The stars go to whoever is still willing to die.

Chapter 6, and again in Chapter 13

Take it with you

Four formats, one source

The manuscript is the single source of truth. The print interior, the ebook, the working paper and this site are all generated from it, so they never drift apart.

This is a complete draft rather than a finished book, and it is published in that condition on purpose. 91 of its claims have been checked against sources and 7 have not. The ones found wrong during verification were corrected and recorded rather than quietly fixed. All of it is there, claim by claim, in the notes.

Or read it here, chapter by chapter