Reply to Lucas & Henneberg: Are human faces unique?

This paper offers a response to the 2015 article of Lucas and Henneberg "Are human faces unique?" (Forensic Sci. Int. 257, 514.e1-514.e6), as well as to the subsequent popularization thereof. In the first part, we assess the probabilistic claims made by the authors and find crucial parts to be unsupported. In particular, the authors offer no probabilistic model on which to base their conclusions. Even if we disregard the errors identified in the first part, we find a troubling discrepancy between the published findings and the popular summary.