Vanishing Hitchhiker

How small of a gesture,
Maybe barely a twitch,
How small of a phoneme,

Maybe barely a peep,
Would be necessary
For representation

Exchanged by two or more
Bodies aligned by signs,
The minimum coat peg,

Minimum existence
Outside of either skull?
Probably binary

Code, superposition
Of qubits, something like
That ought to be enough.

Attaching the message
Is the mysterious
Part, a kind of marriage,

Soluble as any,
Impermanent, brittle,
Fluid. How this means that.