Reply to Ljungberg

Abstract

We are grateful to Jonas Ljungberg for his courteous and informative response to our pair of articles recently published in this Review.¹ We will argue that Ljungberg has misunderstood our intention on one central point. Since other readers may share this misunderstanding, we are happy to set the record straight. We also take this opportunity to stress a second central point which characterizes our work in this Review.