Reminds me of the actuarial sims which excluded all deaths from disease, old age, and traffic accidents. Stairs were one of the top killers but population taper

Reminds me of the actuarial sims which excluded all deaths from disease, old age, and traffic accidents. Stairs were one of the top killers but population tapered off even as "cannot die of disease or old age" immortals although some outliers could make it a bit past a millennia.