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Some calculations used by macroeconomic experts can be adapted to the field of microeconomics and even personal finance; such is the case with marginal propensity to consume and marginal propensity to save.

Many of the analysts are focused on health policy, while others handle energy and climate, labor, macroeconomics, microeconomics, national security and taxes.

Christopher Norio Avery, who teaches microeconomics and statistics at Harvard’s Kennedy School, said changing the system “has exciting upside possibilities, but may have a range of unintended consequences.”

PredictIt makes its data publicly available, and dozens of research institutions have made use of it for studies of microeconomics and political behavior.

“I’ve always remembered the juxtaposition,” Ms. Bestani said, “of her having this conversation about microeconomics while, at the same time, supervising the building of a sand castle.”