“…A provocative theory of metabolism even makes a bold and erroneous assumption that cells are of the same size in all organisms (West & Brown, 2005). Quite the opposite, cell size has varied among tissues, individuals, or species whenever biologists have focused their lenses on this subject (Arendt, 2007; Czarnoleski, Cooper, Kierat, & Angilletta, 2013; Kozłowski, Czarnołęski, François‐Krassowska, Maciak, & Pis, 2010; Stevenson, Hill, & Bryant, 1995). The variation in cell size within and among individuals of the same species poses a challenge for evolutionary biologists to explain.…”