Moreover, there are images resembling, as far as their form goes, the solid bodies which we see, but which differ materially from them in the thinness of their substance. In fact it is not impossible but that there may be in space some secretions of this kind, and an aptitude to form surfaces without depth, and of an extreme thinness; or else that from the solids there may emanate some particles which preserve the connection, the disposition, and the motion which they had in the body. I give the name of images to these representations; and, indeed, their movement through the vacuum taking place, without meeting any obstacle or hindrance, perfects all imaginable extent in an inconceivable moment of time... Error and false judgments always depend upon the supposition that a preconceived idea will be confirmed, or at all events will not be overturned, by evidence. Then, when it is not confirmed, we form our judgment in virtue of a sort of initiation of the thoughts connected, it is true with the perception, and with a direct representation; but still connected also with a conception peculiar to ourselves, which is the parent of error. — Diogenes Laertius, *Lives of Eminent Philosophers*, Book X, Section XXIV (Epicurus, *Letter to Herodotus*), trans. C. D. Yonge (1853). **Surface Gloss:** Speaking in his own voice to Herodotus, Epicurus explains that solid bodies continuously shed ultra-thin, hollow atomic films ("images") that travel at unimaginable speed into our eyes and minds; error arises only when an internal mental motion projects an unconfirmed assumption onto these incoming films. **The Shed-Skin Signal Model:** Treat every organization, product, or person as a vibrating solid that continuously sheds ultra-thin "surface films" (micro-behaviors, UI friction, word choices, response latencies) into the environment. Don't trust their core claims or your own internal projection ("the conception peculiar to ourselves"); catch the shed skins in flight, note how the medium between you and the source has warped the film in transit (the "blunted edges" of a distant tower), and reconstruct the state of the parent body from the geometry of its emissions.
— In our words · Source: Lives of Eminent Philosophers (Diogenes Laertius)