reinvent the wheel

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reinvent the wheel

  1. (idiomatic) To do work unnecessarily when it has already been done satisfactorily by others; to attempt to devise a solution to a problem when a solution already exists.
    • 2000 August 28, Dave Kearns, “Directory Services: Let's not reinvent the wheel”, in Network World, volume 17, page 22:
      Evidently, the trend in security applications is to reinvent the wheel, or in this case, to reinvent the directory service.

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