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The classification of a word as "unpaired" can be problematic, as a word thought to be unattested might reappear in real-world usage or be created, for example, through humorous back-formation. In some cases a paired word does exist, but is quite rare or archaic (no longer in general use).
Keypunch operators keyed data or programs onto physical media, for example punched cards, so that it could be read by machines, for example computers. [ 116 ] Keypunch operators were made obsolete by data entry systems which allowed data and program originators to enter it directly instead of writing it on forms to be entered by keypunch operators.
Obsolete technology Replacement Still used for Bathing machine: No longer required due to changing social standards of morality Hourglass: Clock: Tasks where a fixed amount of time can be measured with a low-tech solution: Exposure time tracker in saunas (where electronics might be damaged by the heat or ultraviolet light); retro kitchen timers, board games, other short-term timers.
For example, did you know that tug of war was an official team event in the Summer Olympics during the earl 10 Weird Olympic Sports That No Longer Exist, from Tug of War to Pole Archery Skip to ...
A historical sovereign state is a state that once existed, but has since been dissolved due to conflict, war, rebellion, annexation, or uprising. This page lists sovereign states, countries, nations, or empires that ceased to exist as political entities sometime after 1453, grouped geographically and by constitutional nature.
This is a list of languages arranged by age of the oldest existing text recording a complete sentence in the language. It does not include undeciphered writing systems, though there are various claims without wide acceptance, which, if substantiated, would push backward the first attestation of certain languages.
Obsolescence is the process of becoming antiquated, out of date, old-fashioned, no longer in general use, or no longer useful, or the condition of being in such a state. . When used in a biological sense, it means imperfect or rudimentary when compared with the corresponding part of other organ
These theories that are no longer considered the most complete representation of reality but remain useful in particular domains or under certain conditions. For some theories, a more complete model is known, but for practical use, the coarser approximation provides good results with much less calculation.