I see a set of constraints facing us in the future, and they’re all going to be very expensive. First is funding retirements for the Baby Boom generation. Second is continuing increases in the costs of healthcare. The third is replacing decaying infrastructure. The fourth is adapting to climate change and repairing environmental damage. The fifth is developing new sources of energy. The sixth is what I see as in all likelihood continuing high military costs. The seventh is the costs of innovation.