#impracticality  concerned with theoretical possibilities rather than actual use
  exclusion:  practicality
  supertype:  inutility__uselessness__unusefulness  the quality of having to practical use
  subtype:  idealism  impracticality by virtue of thinking of things in their ideal form rather than as they really are
     subtype:  romanticism  impractical romantic ideals and attitudes
     subtype:  quixotism__knight_errantry  quixotic (romantic and impractical) behavior

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