Real Talk: What We Think We Know — That Just Ain’t So
summary
Argues that several SRE assumptions fail when tested: the lines of code metric is discredited (Capers Jones, 1995); a widely quoted 85% change claim (Gartner 2015) lacks nuance because changes also fix incidents; incident timing and severity metrics ignore context — Courtney Nash’s work shows counts and phases mislead; real incidents follow a non-linear cognitive model from control-room studies; labeling repeats affects reports; the priority is empowering responders who immediately recognize and resolve issues, not perfect stakeholder telemetry.
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chapters (9)
- 0:00Introduction and context
- 2:37Challenging misconceptions
- 4:40Science and practitioner roles
- 7:29Critical inquiry
- 9:21Evaluating engineering metrics
- 13:55The myth of linear incidents
- 17:26Models vs. reality
- 21:10Understanding repeat incidents
- 27:18Focusing on expertise
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