Einvent The Wheel V. To Design Or Implement A Tool Equivalent To An Existing One Or Part Of One, With The Implication That Doing So Is Silly Or A Waste Of Time.

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reinvent the wheel v.

To design or implement a tool
equivalent to an existing one or part of one, with the implication
that doing so is silly or a waste of time. This is often a valid
criticism. On the other hand, automobiles don't use wooden
rollers, and some kinds of wheel have to be reinvented many times
before you get them right. On the third hand, people reinventing
the wheel do tend to come up with the moral equivalent of a
trapezoid with an offset axle.