The Value of Life – Part 1

Once upon a time, there was a village of peaceful immortal humans. They did not age past their primes, but they could still die from starvation or injury. But perhaps because their lives were so long and full, they all valued each other very highly and lived in peace. Indeed, there were no lengths to which the villagers would not go in order to save one of their fellows from unwanted annihilation.

Or, at least, that’s how life was before the dragon came.

Dragons desire two things from people, as I’m sure you know: gold, and flesh. And this dragon, woe be upon the villagers, was powerful indeed — nigh invincible, with a cunning to match. The dragon, easily capable of killing the entire village outright, gave a grim ultimatum:

Each person in this village must pay a tax of gold, every year, in proportion to that person’s age. Anyone who cannot pay the tax will be eaten.

The villagers begged and pleaded, they wept and raged, but the dragon was unmoved. It merely showed them a few heaps of rock that looked likely to make good gold mines, and told them to get to work.

The villagers tried their best. They really did. They were not miners, but they were fast learners. They worked themselves ragged, throwing aside stones, digging at the earth with their bare hands until their fingers bled, hunting and gathering as little as possible, letting their shelters deteriorate — yet still, they could not make the dragon’s tax. At the end of a year, the dragon returned, and took all the gold they had, and ten of the oldest villagers (for giving up the eldest villagers was the way to save the most lives).

Distraught, the villagers resolved to try harder next time. They pushed themselves to their limits and beyond. They raced against time. They grew gaunt and ragged. Their eyes sank, their skin grew sallow, their arms thinned. They pushed themselves too hard, until they were collapsing in the mines. The next time the dragon came, it took all their gold and fifty of their number.

Their strategy wasn’t working.

But these villagers were born of humanity, and ingenuity is humanity’s birthright. So in their third year, the surviving villagers came to bitter terms with their situation, and set to hunting and gathering and growing stronger, accepting that they had to take care of themselves before they could take care of their friends. They set to building picks and shovels, realizing that they could not save themselves with their hands alone.

At the end of the third year, the dragon took all their gold and one hundred of their number, for their infrastructure had not yet started paying off.

But by the end of the fourth year, the dragon only took two.

Shortly thereafter, the dragon (delighted by their progress) informed the villagers that the tax would now begin increasing faster; exponentially in age.

This time, the villagers only nodded, and forged their hot fury into cold resolve.

It has been many, many years since the dragon came to the village. In fact, it is not a village any more: the village grew to a city, and the city grew to a civilization.

The population is quite a bit younger now. The elders are wiser and more productive, and can get more gold out of the ground per hour, but there simply comes a time when this increased productivity is not worth the cost in lives. When that time comes, the elders go willingly to their fate, for these people are not the type to buy their own lives at the cost of two others.

In fact, hard tradeoffs such as these are commonplace. The villagers long ago discovered specialization and economics, and now most of them don’t work in the mines. Some of them spend time growing or preparing food, others spend time maintaining shelter, others spend time inventing new tools and mechanisms that can keep pace with the dragon’s dreadful tax. Indeed, some spend their lives on art and entertainment — for the villagers have learned the importance of maintaining motivation and morale.

(And some villagers, deep underground, far from the dragon’s prying eyes, are designing weapons.)

So you will find, in this civilization, that there are people who dedicate their lives not to mining gold, but to writing books — but if you look closely, you’ll notice that this only happens when the author can save more lives through increased morale and productivity than they can through working in the mines directly. And so this civilization, hellbent on saving as many people as it can every year, still produces books and plays and movies.

Which means that in modern times, you can calculate the exact cost of saving an additional life. It turns out that one life goes for about the same price as a thousand movie tickets.

As it happens, two of the citizens of this dragon-ridden world, Alice and Bob, are having a conversation about the value of a life, right now. Let’s listen in:

Alice: So you see, the true value of a life is equivalent to about a thousand views on the latest blockbuster.

Bob: Nonsense! A life is worth much more than two thousand hours of movie-viewing! A life is nigh invaluable! You can’t put a price tag on a human life!

Alice: What hollow indignation! If your actions are inconsistent with putting a price tag on life, then there are ways you could shuffle money around to save more lives. If you want to save as many people as possible with a limited amount of money, then you must put a price on life!

Bob: But a thousand viewings of a movie simply isn’t worth the same as a life! If I got to choose between a thousand people watching another blockbuster and the life of my mother, I’d choose the life of my mother any day!

Alice: Yes, but this intuition is inconsistent. The market for lives here is effecient, and the market has spoken, and the market says that a life is equal to about a thousand views of the latest blockbuster. Your mother’s life isn’t worth more than the accumulated pleasure that a thousand people experience when watching the latest blockbuster! The viewing experience and your mother’s life just turn out to have the same value, and if your intuition disagrees, you’ll have to fix your intuition!

Do you see the errors here?

Alice and Bob are both right, and both wrong.

Alice is correct in that the villagers must treat a life as equivalent to a few thousand hours worth of watching movies. Given that the villagers are all still trying to save each other, those thousand people only go to the movies if the resulting boost in motivation and morale leads them to collectively generate enough additional wealth to save more than one additional person. If you stopped those people going to the movies, and put their money towards producing gold instead, then less gold would be produced overall, and more people would die. Bob must trade off two thousand movie-hours against one life, if he wants to maximize lives saved.

But Bob is correct in that the value of a life is worth much more than two thousand hours of viewing movies!

Alice’s claim is that the sum experience of two thousand movie-hours is equal to the intrinsic value of a life. The market has spoken, and so you must not protest, if you want to save lives.

But in fact, the very reason that Bob must treat the thousand movie-viewings as equivalent to a life is because those viewings lead to increased morale, which leads to more than one life being saved. This fact does not equate the experience of a life lived to the pleasure of the viewers.

What Alice has forgotten is that the village is plagued by a dragon.

Were it not for the dragon, these villagers would go to almost any lengths to save each other from unwanted death. There might be some lengths to which they would not go, some price they would not pay, in pain, sorrow, and decreased quality of life among the rest of the villagers, in order to save a friend. But, in the absence of a dragon, this cost would be a hell of a lot higher than two-thousand hours worth of watching movies.

Enough analogies. Let’s look at our universe, now. Our economy is not efficient — it costs a few million dollars to save a life in developed nations, and a few thousand dollars to save a life in underdeveloped nations (where “save a life” really only means “push death back a bit”, in these dark times). Furthermore, our economy is not maximizing for lives: humans are prone to scope insensitivity and a whole slew of other biases that dampen their ability to care about other humans dying against their will. Furthermore, it is important to care not only about the lives we save, but about the lives we live.

Despite all this, we are not all that different from those villagers in the lengths we would go to save each other if death was not inevitable.

I don’t know how the future will turn out. I don’t know how we’ll end up trading off the preservation of a life against the improvement of a life against the creation of a life, if and when we make it past this phase of scarcity. But I can tell you this: There may well come a day when humanity would tear apart a thousand suns in order to prevent a single untimely death.

That is the value of a life.

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