Caution about collaborations

"... There is often less perfection in works composed of several parts, and made by the hands of a variety of contributors, than in those on which only one person has worked."

--- Rene Descartes

(in old french: "... Il n'y a pas tant de perfection dans les ouvrages composes de plusieurs pieces, et faits de la main de divers maitres, qu'en ceux auxquels un seul a travaille.")

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