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user: roca created: on Oct 28, 2014 karma: 5598 about: Robert O'Callahan. Christian. PhD from CMU (2001) in static program analysis. Former Mozilla Distinguished Engineer. Primarily worked on Gecko layout and rendering. Started https://rr-project.org and currently maintaining it. Cofounder of https://pernos.co, an omniscient debugger that people actually use. Google. submissions comments favorites claim account