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One particular cognitive function examined in detail is hypothesis generation and exploration, given the impact of obscure automation on engineers\u2019 development of coherent models of the systems they manage. Each case was analyzed using the techniques and concepts of cognitive systems engineering. The set of cases provides a window into the cognitive work \"above the line\" in incident management of complex web-operation systems.<\/jats:p>","DOI":"10.1145\/3380774.3380778","type":"journal-article","created":{"date-parts":[[2020,1,21]],"date-time":"2020-01-21T19:49:00Z","timestamp":1579636140000},"page":"52-70","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Cognitive Work of Hypothesis Exploration During Anomaly Response"],"prefix":"10.1145","volume":"17","author":[{"given":"Marisa R.","family":"Grayson","sequence":"first","affiliation":[{"name":"Mile Two, LLC."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2020,1,21]]},"reference":[{"volume-title":"Trade-offs under pressure: heuristics and observations of teams resolving Internet service outages. Master's thesis","author":"Allspaw J.","key":"e_1_2_1_1_1","unstructured":"Allspaw, J. 2015. 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