Obsolescence is the process of becoming antiquated, out of date, old-fashioned, no longer in general use, no longer useful, or superseded by innovation, or the condition of being in such a state. When
Jimi Hendrix's bell-bottoms
Ending the Depression Through Planned Obsolescence by Bernard London, 1932
A skeuomorph is a derivative object that retains ornamental design cues from structures that were necessary in the original. Skeuomorphs are typically used to make something new feel familiar and thus
Obsolescence
…Moore's law Skeuomorph Sustainable design…
Electric light bulbs in the shape of candle flames
Triglyph and guttae in the Doric order; traditionally seen as recreating in stone functional features of the wooden Greek temples that preceded them.