Not to fall into exactly the trap that you set, but there is a survivorship bias at play here. If you are wholly committed to young earth creationism, many col

Not to fall into exactly the trap that you set, but there is a survivorship bias at play here. If you are wholly committed to young earth creationism, many college classes will be an unpleasant confrontation from start to finish and very little of your existing knowledge will help you pass classes even if you want to play along. People who come to college with more mainstream ideas will have an easier time and be more likely to succeed. And it's not entirely surprising that graduates have a bit of a calcified worldview. If you read Marx without dropping out to join a revolution and were able to deal with a lot of compelling but conflicting arguments in whatever field you studied it's going to take quite a bit for you to radically change your mind.