The variance of the fat-tailed distribution of casualties of nuclear warfare post-M.A.D. is much higher than during WW2, and is may be more prone to inadvertent

The variance of the fat-tailed distribution of casualties of nuclear warfare post-M.A.D. is much higher than during WW2, and is may be more prone to inadvertent unintended catastrophe than an epidemic now that we can research them, but that's also unforeseeably variable.