Studying can feel like a solitary activity - looking back at my student days, I remember sitting alone at a desk with just my textbooks, highlighters, cans of Coke and expanding self-doubt. If I didn't understand a concept, or couldn't find an answer, I'd search deeper into the pages, desperately, thinking maybe there was a clue I had missed. If it still seemed hopeless I'd sleep, rationalising that perhaps somehow the revelation would appear in my dreams. (It usually did not.)