 or 1 in 73 million. This impressively low number no doubt played a role in the outcome of the case. Sally Clark was convicted of murdering her two infant sons (though the conviction was ultimately reversed on appeal). The \(\slashfrac{1}{(73\times 10^6)}\) figure rests on the assumption of independence. This assumption is seemingly false since environmental or genetic factors may predispose a family to SIDS (for a fuller discussion of this point, see Dawid 2002; Barker 2017; Sesardic 2007).