@InProceedings{2021:Garlan:Debate,
      AUTHOR = {Garlan, David},
      TITLE = {The Unknown Unknowns are not Totally Unknown},
      YEAR = {2021},
      MONTH = {18-21 May},
      BOOKTITLE = {Proceedings of the 16th Symposium on Software Engineering for Adaptive and Self-Managing Systems},
      ADDRESS = {Virtual},
      PDF = {http://acme.able.cs.cmu.edu/pubs/uploads/pdf/GARLAN_SEAMS21_Debate_Final.pdf},
      ABSTRACT = {The question of whether “handling unanticipated changes is the ultimate challenge for self-adaptation” is impossible to evaluate without looking closely at what “unanticipated” means. In this position paper I try to bring a little clarity to this issue by arguing that the common distinction between “known unknowns” and “unknown unknowns” is too crude: for most systems there are changes that are not directly handled by “first-order” adaptation, but can, with appropriate engineering, be addressed naturally through “second-order” adaptation. I explain what I mean by this and consider ways in which such systems might be engineered.},
      KEYWORDS = {Self-adaptation, uncertainty}
}