If college didn't improve your critical thinking skills, what did you do?

NPR reported on a study that found that “more than a third of college students don’t measurably improve in critical thinking skills through four years of education. The study, presented in the new book Academically Adrift, measured, among other things, how much students improved in writing skills and how much they studied.” The full article, “A Lack Of Rigor Leaves Students ‘Adrift’ In College,” can be found here.

I asked about college being easier than high school recently. Now this seems to condemn the higher education system even more.

But what I’m wondering is what people are doing if they aren’t learning? How do they get diplomas? What happens afterwards? Do you know people like this? What do they do? Why do they think they are there?