• Fear

• the emotion of violet — response to invisible threat
• Wavelength: 380-420 nm
• evolutionary origin:: UV radiation, cellular apoptosis, bruising — death from radiation
• violet sits at the edge of visibility, nearing the ultraviolet. the shortest wavelength humans perceive, signaling the boundary of the known
• UV induces programmed cell death — the most fundamental biological threat

• in prism

  • signals unknown threat, unverified source, potential irreversible action
  • a transaction requiring extreme caution: violet. an unverified particle from unknown neuron: violet
  • fear is the emotion of the boundary — where the known graph ends and the unknown begins