Banks around the world desperately want bailouts of billions of dollars, but they also have another need they’re unaware of: women, women and women.

At the recent World Economic Forum in Davos, Switzerland, some of the most interesting discussions revolved around whether we would be in the same mess today if Lehman Brothers had been Lehman Sisters. The consensus (and this is among the dead white men who parade annually at Davos) is that the optimal bank would have been Lehman Brothers and Sisters.

Wall Street is one of the most male-dominated bastions in the business world; senior staff meetings resemble a urologist’s waiting room. Aside from issues of fairness, there’s evidence that the result is second-rate decision-making.

“There seems to be a strong consensus that diverse groups perform better at problem solving” than homogeneous groups, Lu Hong and Scott E. Page wrote in The Journal of Economic Theory, summarizing the research in the field.