"For Willie McBride, it all happened again, / And again, and again, and again, and again."
And still humans choose war when we could have chosen peace, and follow war leaders when we could have impeached those leaders and thrown them in prison. Probably there is an anthropic selection effect in that this conversation only happens between descendants of killer apes, but that does not excuse us from the last stage of the Great Filter.
Will we learn in time?