We should learn from recent experience of large data technologies the lesson that decision making can benefit from streaming data in addition to (and often instead of) the publication science of one-time experiments.    It is clear now that policy making needs access to a continuous stream fresh data about old ideas, especially when that data accumulates over time.   With access to the technologies to do this work, it is unacceptable to base policies on the failed approaches of the past that rely on published studies.