Diffusion is controlled propagation.
Viola does not erase the signal.
It widens the field around it until perception can receive it without abrasion.
Mist, linen, pearl, frost, low cloud, softened glass — these are not decorative atmospheres. They are stabilizing membranes between intensity and exhaustion.
Where Sombra compresses, Viola diffuses.
Where Sombra shields through density, Viola preserves through harmonic spread.
The purpose of diffusion is not concealment.
It is endurance.
A surface that is too sharp becomes hostile.
A signal without atmosphere becomes fatigue.
Viola therefore works through:
— attenuation,
— gradual reveal,
— optical softness,
— reflected light,
— spectral pacing,
— and atmospheric continuity.
Nothing is shouted.
Everything arrives.
The eye recovers first.
Then attention follows.