#by-product__byproduct  a secondary and sometimes unexpected consequence
  supertype:  #outcome__effect__result__event__issue__upshot  a phenomenon that follows and is caused by some previous phenomenon; "the magnetic effect was greater when the rod was lengthwise"; "his decision had depressing consequences for business"; "he acted very wise after the event"
  subtype:  #epiphenomenon  a secondary phenomenon that is a by-product of another phenomenon

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