It has been suggested that what is required is a change in mindset within finance and economics that moves the field towards methods of natural science. Perhaps finance needs to be thought of more as an observational science where markets are observed in the same way as the observable universe in cosmology, or the observable ecosystems in the environmental sciences. Here local principles can be uncovered by local experiments but meaningful global experiments are difficult to envision as feasible without reproducing the system being observed. The required science becomes that based largely on pluralism (see scientific pluralism the view that some phenomena observed in science require multiple explanations to account for their nature), as in most sciences that deal with complexity, rather than a singled unified mathematical framework that is to be verified by experiment.