III. The Chemistry That Needed an Inside

The circle continued.

But the world did not stand still.

Molecules drifted away.

Others arrived.

Some were useful.

Some were not.

Sometimes there was plenty of what the circle needed.

Sometimes there was almost nothing.

The circle could continue only where the right things happened to meet.

Then, one day, a surface appeared nearby.

Nothing had made it for the sake of the circle.

It was simply there: a thin layer where some molecules gathered and others did not pass so easily.

The chemistry changed.

Molecules that had once drifted away remained nearby.

Others that had once entered freely were held back.

The reactions became easier to sustain.

The circle lasted longer.

Then something unexpected happened.

The surface itself was changed by the reactions taking place beside it.

Some molecules became part of it.

Others were pushed away.

The chemistry was no longer merely happening near the surface.

It was beginning to shape the surface.

And the surface was beginning to shape the chemistry.

For the first time, there was a difference between here and elsewhere.

Not a wall.

Not a fortress.

A difference.

Inside, molecules encountered one another differently.

Outside, they did not.

The circle had found a place.

But the place was not merely somewhere the chemistry happened.

It had become part of what made the chemistry possible.

The boundary gathered what was needed.

The chemistry altered the boundary.

The altered boundary changed what could enter.

What could enter changed the chemistry again.

And so the circle acquired something it had never possessed before.

An inside.

There was still no creature.

No intention.

No guardian at the door.

Yet chemistry had begun to make a difference between itself and its surroundings.

And with that difference came a new possibility:

to continue, the circle might have to make and maintain the very boundary that made its continuation possible.