The author attributes this difference to men restricting reproduction later in the cycle to ensure herds of large animals for slaughter at festival time: ‘a co-ordinated cycle of pig management culminating in a pig population composed mainly of large animals . . . implying the restriction, at some stage of the cycle, of reproduction’ (1981: 540). This interpretation sits uneasily with Wola practices. Wola pig kills are less predictable events, and the chaotic way in which they schedule them – requiring that a community ﬁrst agrees that a kill is due and then featuring considerable wrangling as men strive to reach a consensus over timing – would make such planning difﬁcult (Sillitoe 1979a, see also Rappaport (1968: 158-9) on consensus formation among the Maring, and Lederman (1986: 187-212) on the political dimensions of timing pig kills). Here people rely more on exchange opportunities and trade to build up their herds with large beasts before a kill, a point that I return to below (see Table 3.7).