Planned obsolescence or built-in obsolescence (from lat. obsolescere, becoming obsolete, passing out of use, becoming outdated or outmoded) in industrial design is a policy of planning or designing a product with an artificially limited useful life, so it will become obsolete, that is, unfashionable or no longer functional after a certain period of time. The rationale behind the strategy is to generate short-term sales volume by reducing the time between repeat purchases (referred to as “shortening the replacement cycle”).