I just spoke to a friend who cheered me a little... she had the same professor I have for lasers last spring when she took 'atomic and molecular spectroscopy'. She was also in a similar situation, going into the final (worth 40% of the final grade) with a B. She bombed the final, couldn't answer any of the questions, and BSed her way through the final. She felt like she bombed it and still ended up with a B in the course. These are the things I need to hear right now. I am no where near prepared to take this final. I have a B (I think) going into the final, I just want to keep it and move on with my life. Who the hell knows what will happen.