mnli premise: 17 Some observers have declared that the U.S. economy has entered a new era of more rapid economic growth, and it is possible that future growth could be even more robust than CBO's baseline economic projections assume. hypothesis: 17 Some observers have declared that the U.S. economy has entered a new era of more rapid economic growth, and it is very possible that future growth could be even higher than CBO's baseline economic projections assume.