[donmatito]

The most interesting class I took in my entire studies (Soft Matter physics) was also the one with the most interesting exams.

Our year's 2-hour exam was the following. The professor gave us a small cup of water, a piece of paper, and a piece of toilet paper. There was only 2 questions - place one end of the paper in the water. Describe what happens. Explain - place one end of the toilet paper in the water. Describe what happens. Explain

The year before us was with a small piece of glass and a small piece of potatoe - breathe on the glass. Describe. Explain - rub the potatoe on the glass. Breathe on it. Describe. Explain

You REALLY needed to understand the class material to succeed in these seemingly simple tests