A physicist and a mathematician setting in a faculty lounge. Suddenly, the coffee machine catches on fire. The physicist grabs a bucket and leaps towards the sink, fills the bucket with water and puts out the fire. The second day, they are sitting in the same lounge, and the coffee machine catches on fire again. This time, the mathematician stands up, gets a bucket, hands the bucket to the physicist, thus reducing the problem to a previously solved one.From the Science Jokes page of Mr. Kevin A. Boudreaux, Instructor, Department of Chemistry at Angelo State University in San Angelo, Texas.