What is going on here is the substantial impact of absolutely staggering infant and child mortality. Under these assumptions, by age 10, fully 50% of all children born are already dead; only about 45% of all children make it to adulthood as we generally define it (around 18 years). And as a reminder that is only for live births – we have not yet considered miscarriages, stillbirths or maternal mortality. This enormous child mortality rate is not an accident of a particular ancient society, but in fact an absolute constant for all pre-industrial societies, be they hunter-gatherers, pastoralists or farmers, be they urbanized or not, ‘civilized’ or not, ‘western’ or not. For all societies, everywhere at every time before about 1750 (and in most places for a long time after that) it was simply a fact of life that half, HALF of all children died.

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First a high proportion of these societies at any given time were children, even by their standards of childhood (often ending between 15 and 17, not at 18). Generally about half of the population at any given time under this mortality regime is going to be age 15 and below, whereas for a modern population close to replacement that figure is going to be 20-25%. Children were thus socially omnipresent in a way that they simply aren’t in any modern industrial society (but are in some developing countries).

Equally, for societies with very low productivity the demand to feed that population means that pre-modern cultures do not have a ‘childhood’ as we understand it, as an extended vacation from work and adult life. Children were instead working in whatever capacity they were physically able as soon as they were physically able because these societies simply lacked the resources to support half of the population on a non-working basis (which is also going to be true when it comes to labor and gender, but we’ll get to that later in the series). This, of course, was especially true for our peasants, at the bottom of the society, whose work was necessary for its basic subsistence, but one gets the sense that childhoods were short and transition into work was common even among the higher rungs of society – for instance the age for an elite boy to become a page attending a knight was seven.