A user shared their challenging experience of taking an open book thermodynamics exam without their textbook or a calculator, leading to significant difficulties in completing the test. They managed to set up equations but struggled with interpolation and complex problems, such as deriving from excess free energy. Others empathized, recalling their own exam mishaps, including forgetting essential tools like calculators or writing instruments. The discussion highlighted the importance of preparation and the stress of exams, with several participants sharing personal anecdotes about similar experiences. Despite the initial panic, the user later received their final grade, achieving an A, which provided a sense of relief and hope for others facing academic challenges. The conversation also touched on the differing educational practices in various countries regarding calculator use in exams.