Whereas once the area was sufficient for both sides, there’s now only room for one. (There’s no hint of the fact that San Juan Hill was, in fact, a predominantly Black neighborhood.) The filmmakers’ attempt to pin down a cause for the Jets-Sharks rivalry reflects their more general shift, in the new film, toward facile psychologizing.

“It’s about embracing the inscrutable nature of human interactions,” says Chang. Evidence-based medicine was a massive improvement over intuition-based medicine, he says, but it only covers traditionally quantifiable data, or those things that are easy to measure. But we’re now quantifying information that was considered qualitative a generation ago.

ynthesizing qualitative research enables reviewers to ask questions that inform the development of, or the implementation of, interventions. For example, in the context of intervention evaluation, they can help define relevant and important questions, help determine appropriate outcome measures by looking at “subjective” outcomes, look in detail at issues concerning implementation or the acceptability or appropriateness of an intervention, identify and explore unintended consequences, contribute to service delivery and policy development by describing pro-cesses and contexts, and inform and illuminate quantitative studies, for example, by contributing to the design of struc-tured instruments, assessing the fairness of comparisons in experimental studies, or unpacking variation within aggre-gated data (Davies, Nutley, & Smith, 2000).