Abstract
A recent paper in this journal claims that prior estimates of the bioenergetic costs of producing cells are off by more than 100-fold. Here, it is shown that this conclusion is based on an erroneous interpretation of the methods previously employed by a diversity of authors and that the downstream arguments are conceptually flawed. Likewise, the author's claim that the establishment of the mitochondrion caused a quantum leap in bioenergetic capacity that spurred a revolution in eukaryotic innovation is inconsistent with empirical data and evolutionary theory.