“…However, the 'unknown unknowns', or novel parameters that we do not yet consider, are not the focus of this interesting study.By recycling parameters that have been examined in the past, there is a risk that we are simply looking at the same metrics but from different perspectives. Face-mask ventilation (FMV)is not a priority area in airway management research [5], but for a step change in clinical practice of FMV, we require novel approaches to prediction and management [1,6,7]. It is time that we move away from complex scoring systems and harness technology better, such as point-of-care imaging, machine learning and 3D facial imaging technology.…”