What is the role of caustic light patterns in Frutiger Aero water scenes?

In Frutiger Aero, caustic light patterns are essential for achieving the signature hyper-clarity and depth that define the aesthetic's water scenes^[6]. While these shimmering patterns are not always physically plausible in diffuse lighting, they are included because they feel aesthetically correct, providing the visual interest and 'shimmer' associated with the style's optimistic, nature-integrated future^[3][6].

Technically, these effects are often created by projecting distorted noise patterns onto surfaces beneath the water^[3]. By dynamically warping these textures, designers simulate the refraction of light through moving water, which reinforces the sense of a clean, utopian environment where technology and nature coexist in harmony^[3][6].