Correction to: 'The entropic basis of collective behaviour'.

In fact the Kesten–Stigum theorem [2] only states that the number of nodes will converge to some random variable, the distribution of which depends on the choice of offspring distribution. This random variable has a mean of z , where z is the mean offspring per node and h is the number of generations. Therefore, equation (3.2) in the original manuscript, and the results derived from it, hold in the reduced set of cases where the number of leaves in the tree of potential future choices converges to an exponential distribution. Though we cannot delimit all processes where this applies, there are two special cases with particular relevance to our manuscript: