This paper analyzes these logs for the information that developers sought, the sources that they used, and the situations that prevented information from being acquired. The paper identifies twenty-one information types and catalog the outcome and source when each type of information was sought. The most frequently sought information included awareness about artifacts and coworkers. The most often deferred searches included knowledge about design and program behavior, such as why code was written a particular way, what a program was supposed to do, and the cause of a program state. Developers often had to defer tasks because the only sources of knowledge were unavailable coworkers.
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