In fields such as science and technology, or in medicine, we’re used to achievements that represent Progress, progress that is obvious and indisputable. We do things better than we did before. But in the field of music, Progress has at times been a misleading concept. Is there such a thing as being a better violinist than Jascha Heifetz, a better cellist than Mstislav Rostropovich, a better teacher than the great teachers of days gone by? I don’t think so. For me as a musician, and as a teacher