Just imagine.
In the 20th century, we doubled the length of human life. Maybe we could do it again. But thanks to AI, not in a century—rather in a decade. Exponentially. Over and over again.
That thought alone feels almost unreal.
In fact, it was a text by Dario Amodei that pushed me to seriously think about this. He argues that AI-enabled biology and medicine could radically compress scientific progress:
In other words: what normally takes a lifetime of research might soon take just a few years.
“My basic prediction is that AI-enabled biology and medicine will allow us to compress the progress that human biologists would have achieved over the next 50–100 years into 5–10 years. I’ll refer to this as the ‘compressed 21st century’.”
And when you look at life expectancy, the numbers suddenly stop feeling so crazy.
As Amodei also writes:
“This might seem radical, but life expectancy increased almost 2x in the 20th century (from ~40 years to ~75), so it’s ‘on trend’ that the ‘compressed 21st’ would double it again to 150.”
A Compressed Century
So let’s count.
If human life expectancy went from roughly 40 years to around 75 in the 20th century, doubling it again puts us somewhere near 150 years.
And not in the year 2100—but possibly within the next decade or two.
If powerful AI continues to improve, this progress likely wouldn’t stop there. One medical breakthrough would quickly lead to another. Aging itself might become something we continuously push back, slow down, or partially reverse.
We might not just live longer. We might stay younger.
That sounds like science fiction. Maybe fantasy. But there are already living organisms on Earth that live hundreds, thousands, or even millions of years. Yes, their biology is very different from ours—but for the first time in history, we are seriously talking about changing our own.
Better cells. Repaired DNA. Bodies that don’t inevitably fall apart.
And that’s where things stop being just exciting—and start being complicated.
What If We Stopped Dying?
The real question isn’t only can we live almost forever.
It’s what happens if we do.
What happens to Earth if people stop dying?
Today, we worry about demographic decline. About not having enough babies. About aging populations and shrinking societies. But what if the problem flipped?
What if people stayed healthy and young for much longer—and could have children not only in their 50s, 60s, or 70s, as already happens today—but far later?
Someone could decide in their 120s, 250s, or even 500s that they are finally bored with single life, done with casual dating, and want to settle down.
Other people wouldn’t have just two kids. Or three. Or five. They could have 20, 50, or 100 children—spread across centuries.
From today’s perspective, that sounds absurd. But so did the internet. So did in vitro fertilization. So did a global pandemic that shut down the entire world.
Crazy times usually feel crazy mainly because we’re standing inside them.
Maybe this, too, would become a new normal—sooner than we expect.
So the question is, my fellow human:
What would you actually do with your life if you could live almost forever?
- How many books would you finally read—or write?
- Would you live faster, trying everything, or slower, knowing there’s no rush?
- How wisely would you invest your money if time worked in centuries, not decades?
- How many different jobs or careers would you try?
- How many new fields or disciplines would you want to study?
- How many life partners would you have over hundreds of years?
- How many children would feel meaningful?
- How many planets would you want to visit?
- And how would you make sure you remember any of it—or decide what to forget?
Two Futures, Both Possible
Right now, we can barely imagine how extraordinary the future ahead of us might be.
Or maybe we’ll fail. Maybe we’ll build something we don’t fully understand. Maybe we’ll lose control. Maybe we’ll let AI destroy us—and we’ll all be dead by 2035.
Both futures feel disturbingly plausible.
A near-endless life wouldn’t just change how long we live. It would quietly rewrite what love, ambition, boredom, and meaning even are.
What We Can Do Now
But before—or if ever—AI makes this a reality, we can already take inspiration from people who live longer and healthier lives today.
From places like the Blue Zones, where people routinely live past 100.
Or from modern longevity protocols focused on movement, nutrition, sleep, and mental health.
Even without radical technology, we can already live better.
And if one day we truly gain more time, the question won’t just be how long we live—but whether we’ve learned how to use it.