Jellyfish’s 2022 Debunking Myths report challenges common assumptions in software development through data-driven analysis. Examining thousands of teams, it found that high-priority Jira issues are not completed faster than medium ones due to inconsistent tagging and Jira hygiene. Research confirmed smaller pull requests receive fewer comments and spend less time in review, validating this as a best practice. Story points, intended to predict effort, showed weak correlation with cycle time or allocation, with accuracy varying widely by team. Moreover, teams using story points were not more efficient, showing no consistent improvement in speed or effort compared to those that did not.

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