New York City is enormous. Its metropolitan area is home to nearly twenty million people.
Yet there is a fascinating detail: the island of Manhattan alone concentrates roughly two million inhabitants— one of the most intense human densities on the planet.
So today I shall employ a somewhat unusual unit of measurement. Not kilometres. Not millions.
I shall use the Manhattan Unit.
An island full of people walking, talking, dreaming, and occasionally colliding with destiny at every corner.
Because large numbers—the truly large ones—present a curious problem: we pronounce them with ease… yet we almost never grasp their true dimension.
For instance.
to avoid confusion, we shall speak in thousands of millions.
Now let us attempt a small mental experiment.
Imagine South America composed entirely of Manhattan islands placed side by side, each with the same population density.
We would obtain approximately 502 thousand million people living there.
Yes. Only in South America.
And if we filled the whole surface of South America, Central America, and North America with Manhattans, the number would climb to 1.213 thousand million people.
Large numbers begin to feel strange, do they not?
...
In 2016, one of the most serious calculations estimated that the observable universe contains roughly two trillion galaxies.
If each galaxy were a person… the Milky Way would be one individual walking across a thousand Manhattans placed together.
And when we speak of potentially habitable planets across all those galaxies… numbers cease to be comparable with any island.
We are speaking of tens of trillions of planets— numbers with eighteen zeros.
Between twenty and eighty trillion, according to that study.
And quite possibly more today, ten years later.
Planets that may have experienced their own mass extinctions. Their own biological resets. Their own evolutionary experiments.
It would be rather unreasonable to imagine that technological intelligence occurred only once in all that vastness.
What may indeed be extraordinarily rare… is coincidence.
Perhaps the great silence of the universe is not an absence of life.
Perhaps it is simply a matter of timing.
The cosmos may be full of voices… yet each one speaks in different centuries.
And so we arrive at one final reflection.
That, in a small corner of the Milky Way, a species emerged capable of thinking, building telescopes, writing poetry, and wondering about its own origin…
that alone is already a statistical miracle.
But that somewhere else there might exist another intelligent civilisation, on another planet… that survived its own cataclysms… passed through its own dark ages… invented its own science and technology…
and that at this very cosmic instant is sufficiently close and sufficiently alive to hear us…
That would not be winning a lottery.
That would be winning every lottery in the universe simultaneously.
Because the problem is not only the distance between the stars.
The real problem… is time.
The universe may be filled with civilizations. But each arrives at the door at a different moment.
And curiously…
something very similar occurs in human life.
The possibilities are many. People are many.
Some more mature. Others still in formation.
But the truly improbable thing… is not that they exist.
The truly improbable thing is to coincide.
I am merely an ordinary human being.
One more person walking across his own small personal Manhattan.
Yet I have had the statistical—almost cosmic—fortune of encountering someone who is far from ordinary.
And since then, even after the inevitable cataclysms of life…
I continue to believe in the same principle the universe itself seems to follow:
the natural evolution of things, the meeting of different worlds, and the mysterious beauty of improbable coincidences.
Because sometimes…
when two stories meet in the same place and at the same instant…
something rare does not happen.
Something astronomically improbable happens.
And yet…
it happens.