“…This observation alone should give pause to those for whom vigilance is predominantly identified with the decrement function. However, the essential point to reiterate is that each individual observer adapts, probably as best they can, to the extrinsic mandate to sustain attention and then to the intrinsic limitations of each specific task design (see also Craig, 1978Craig, , 1987Drury, Holness, Ghylin, & Green, 2009;Holland, 1958). When concatenated across groups of observers, a prototypical curve of failure emerges, which reflects the average human capacity to voluntarily adapt to whatever suboptimal task design is foisted on them by the uninspired designer or the fiendishly inventive experimenter.…”