Drs Meier and Engstrom¹ raise a number of issues regarding our paper and its conclusions.² Their first concern is our use of the terms “precision” and “accuracy”, which they claim are incorrect. Although it is true that the term “precision” can be used to capture repeatability of a measurement (as Meier and Engstrom have reported themselves), it can be (and has been) also used in the fashion that we describe.³ Meier and Engstrom’s assertion that our definition is incorrect is, therefore, incorrect—it is …