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Author: neau <neau@web>
Date: Wed, 22 Jun 2022 01:06:18 +0200
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+* Obsolescence of desirability: When designers change the styling of products so customers will purchase products more frequently due to the decrease in the perceived desirability of unfashionable items.
+* Obsolescence of function: When an item is produced to break down or otherwise become non-functional in an abnormally short period of time.
+* Obsolescence of compatibility: When a product becomes obsolete by altering the system in which it is used in such a way as to make its continued use difficult. Common examples of planned systemic obsolescence include not accommodating forward compatibility in software.
+* Pseudo-obsolescence of desirability: When planned obsolescence appears to introduce innovative changes into a product, but in reality does not, often forcibly outfashioning an otherwise-useful product.
+
+## Examples
+
+* Non-user-replaceable batteries: Some products, such as mobile phones, laptops, and electric toothbrushes, contain batteries that are not replaceable by the end-user after they have worn down, therefore leaving an aging battery trapped inside the device.
+* Phoebus cartel: The cartel conveniently lowered operational costs and worked to standardize the life expectancy of light bulbs at 1,000 hours, down from 2,500 hours, and raised prices without fear of competition.
