Population A. Schematic representation of the percentage of simulated planetary systems (1000 simulations in total for DWD₂ and DWD^∗4) based on two specific properties: whether they experience at least one catastrophic event (ejection, scattering, or collision), and whether they are dynamically cold or hot. The number in each box is related to the percentage of systems whose combination of parameters is specified on the x- and y-axes. In the upper right corner, we show 14.1% of systems that include the 0.2% of systems that are disrupted (see text for details).