In this work, we go a step further and completely divorce the concept of convergence from completing a set number of generations. Instead, we define two convergence criteria: the Spearman coefficient and the number of consecutive convergence generations. Spearman's rank correlation coefficient (here referred to as "Spearman coefficient" for brevity) is calculated at each generation to measure the correlation between the current and previous generation's ranks of top monomers ordered by frequency, as measured by total usage of each monomer in all oligomers generated over the course of the GA run. This coefficient measures covariance as the nonparametric correlation between the ranks of two variables, in this case, top monomers ranked by frequency. Because it is defined as the Pearson correlation coefficient between the rank variables, it is a normalized measure with values ranging from -1 to 1, where the most negative value indicates perfect negative correlation, the most positive value indicates perfect positive correlation, and zero indicates no correlation. In principle, the Spearman coefficient should asymptotically approach 1.0 with increasing GA generations, indicating that the top candidates have been definitively found and therefore there is no change in subsequent generations. Due to the general lack of convergence strategies among molecular GAs, we are unaware of other similar projects that currently use the Spearman coefficient as a measure of convergence. We believe it is a mathematically appropriate measure of correlation for this application, however, and as noted above previous work in our group successfully used this coefficient to measure GA convergence. To determine convergence, a minimum Spearman coefficient and a minimum number of consecutive convergence generations are set at the outset of the GA run. When the Spearman coefficient between two generations meets or exceeds the minimum convergence Spearman coefficient, meaning the two generations are meaningfully similar, that generation is considered a convergence generation, and the counter for consecutive convergence generations is advanced by one.