"I learned quickly, as I tell my graduate students now, there are no answers in the back of the book when the equipment doesn't work or the measurements look strange"

This quote by Martin Lewis Perl is a reminder to his college students that there is no easy answer when it comes to scientific research. He is emphasizing the significance of problem fixing and important thinking when it pertains to clinical research study. He is advising his trainees that when the equipment doesn't work or the measurements look unusual, there is no easy answer in the back of the book. Rather, they should use their understanding and skills to repair the problem and create an option. This quote is a pointer that scientific research study is not always easy which it requires hard work and dedication. It is a reminder that when the going gets difficult, the hard get going which the only method to prosper is to keep pushing forward and never ever quit.