Which was the advent of electricity. and every time that technological change occurred, there was a demand for more skilled workers, and the was ded for more workers and education always seemed to meet those demands. high school graduation rates rose and rose and rose until the '70s when they dipped off and then leveled off and then, of course, we had computers. the skill demands continued to increase but we weren't producing enough skilled workers. >> you know, just what you're saying, because we had edward conner on yesterday. do you know him? >> yes, i do. he loves inequality. >> yes. he sa...