Since the vote on the science slider was for 40%, we're better off building aquaducts then marketplaces, then libraries in our less wasteful cities, in our more wasteful ones marketplace,courthouse,aquaduct,library. The only advantage for libraries is culture and culture flips. We're doing fine in culture, and with our size, our standing will get better. As for culture flips, we already have lots of curruption, and new citieswill only create more.

When the $$$ come in we raise the slider, swicth to libraries (except to beat waste), because over time, the slider is likely to go up.