Students learned some valuable lessons in researching, such as how to navigate a book's index (versus reading every page in search for something useful). Students also discovered that research is a journey, not a destination. Some found the perfect source, just what they needed, on their first try, while others would bring down stacks of books only to find that none were helpful at all.
But, nevertheless, they persisted. And they learned a valuable lesson in patience for the research journey in the process.