The bottleneck on consequential decisions is not analysis. It is not knowing how people will actually behave before you spend. Traditional research is slow, expensive, and often measures what people say rather than what they do. Synthetic populations invert that. Query a modeled public overnight, then spend on the human study only if the stakes require it.

Two camps are forming. One interviews real people, then enriches and re-queries them. The other rebuilds populations from census, traces, and panels, arguing that interviews import the same bias simulation is meant to escape. Buyers are more pragmatic than philosophical. Accuracy, traceability, and whether the output can survive procurement are the first gates.