Sighting

Definition and stakes

Fulgence Marion,  The wonders of optics

“ THE STRUCTURE OF THE EYE. Of all the senses, says an ardent admirer of nature, the sight is certainly that which furnishes the mind with the quickest and most widely-extended perceptions. It is the source of the richest treasures of the imagination, and of our ideas of the beauty, order, and unity of the world around us. How unhappy are those whom a hard fate has deprived of the sense of sight from their birth! ”
Source: Gutenberg

Portrait of Edwin Abbott Abbott Edwin Abbott Abbott,  Flatland (1884)

“ I for my part noticed by the sense of sight, before I entered your Kingdom, that some of your people are Lines and others Points, and that some of the Lines are larger——" "You speak of an impossibility," interrupted the King; "you must have seen a vision; for to detect the difference between a Line and a Point by the sense of sight is, as every one knows, in the nature of things, impossible; but it can be detected by the sense of hearing, and by the same means my shape can be exactly ascertained. ”
Source: Wikisource

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