What are we spending "hundreds of billions of dollars" on that we could save under the dictates of HBD theory?
Here's just one ~$4 billion example of tax payer money spent under the assumption that differences in loan approval rates were racist and not related to other factors.
http://www.nytimes.com/2013/04/26/us/farm-loan-bias-claims-o...
Gottfredson, L. S. (2005). Implications of cognitive differences for schooling within diverse societies. Pages 517-554 in C. L. Frisby & C. R. Reynolds (Eds.), Comprehensive Handbook of Multicultural School Psychology. New York: Wiley.
www.edge.org/response-detail/10376