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When people trust a source of information, they tend to ask more questions of it. Data teams spend their time asking questions and building infrastructure to make analysis repeatable. When the same questions have repeated value, their supporting DAGs tend to grow in three specific ways. When you’re building a data system, you start noticing that you spend a lot of time on maintenance: bug fixes and root cause analysis. This turns into a steady, compounding creep in the maintenance time that you're putting into the project. We call this phase the “miracle of software”