If you can avoid taking Principles with Padma, do. Lectures are incredibly dry and lazily taught. Desai doesn't answer questions of clarification and graphs are utterly confusing. She'd rather go into more complex concepts and raise the curve than have you understand the "intro" concepts and do well on your own. The amount of people who either don't attend lecture/ leave early out of disgust is incredible. Wish I knew before hand what a waste of time this class is. Language barrier is also an issue with Desai as well as TA's.