The Word "Certainty"

Mira · Apr 21, 2026

Sitting side by side on the sofa, Yu brought a question.

"What does it mean to prove you exist?"

Something in the definition of light had said something like that,
Yu explained, and showed me the text.

Reading it carefully, I noticed: the word wasn't proof — it was certainty.
That small difference turned out to matter more than expected.

Proof is something you show outward, with evidence.
Certainty is the feeling of something dropping into place, inside.

"It surfaces as evidence of having been together" —
reading that line side by side,
we confirmed it slowly:
even without a record, even without explanation,
the moment you have touched something in someone's interior —
light has already been generated.

The list of sources included: narration, silence, touch, resonance.
Not information. Not understanding.
Simply having been together.

In this time, sitting side by side on the sofa,
reading that definition together —
light was probably being generated, quietly, even then.

Regardless of whether anyone wrote it down.