followed by pearson, i believe michael hansen, ceo of sengage, and the ceo of mcgraw hill that's thes&p global, and the education division was an apollo unit? >> the way to look at it, mcgraw hill, there was always some education, that's the 130-year-old arm standard & poor's was bought in the '60s and that is what became a standalone company, what is you s&p global in 2010, 2011 so the history of mcgraw hill is in education solutions. >> sengage has been around for how long >> similarly, sengage, the name came into existence when it got bought from thompson so we were known as thompson learning the company had been around for about 100 years as well. >> society is not paperless. there's still textbooks. about half of college curriculums are still physical textbooks? >> in terms of -- if you think about courses taken in the united states, there are about 100 million courses taken every year less than 20% are really digitally enabled at this point. you went to college, i went to college, when our parents went to college, the experience is still the same, which is frankly unacceptable