When you read the title, your first thought it was probably about the undergraduates you are teaching and perhaps some "common scientific knowledge" that they should have acquired in high school. Perhaps you started lamenting about the reading, writing, or analytical skills they lack. Then again, it might have been their lack of critical thinking skills. However, the students in question are graduate students and the knowledge to which is referenced is not factual, conceptual, or related to the scientific process--it is about their careers and what is in store for them.