Response to Mayr and Manegold

Abstract

Mayr and Manegold find the literature review in our recent article (Braun and Huddleston, 2009) inappropriate. We will address their specific concerns below, but we first note that propriety is a subjective concept; what may seem inappropriate to some may be deemed entirely appropriate by others. We stand by the literature review in our article as a fair representation of the state of knowledge when it was written, while accepting the fact that opinions will often vary on what the state of knowledge actually is.