One of the actuarial profession’s valuable contributions to the management of long term financial risks in the field of life insurance has been the development of credible models of human mortality. The humble life table. Over the years (going back several hundred), the techniques have resulted in this fundamental component of fair and equitable pricing and reserving for mortality risk. The table’s contribution to the welfare and advancement of people has been important. But have these techniques been forgotten or ignored by climate change zealots?
The actuary is pragmatic. Theoretical mathematical models of mortality have been developed but they have only ever been able of giving a guiding picture. Human mortality patterns do not slavishly follow a mathematical model. The established method of updating life tables has been to periodically collect data about deaths and recalculate the rates of mortality then re-graduate the raw results into a credible and smooth table. Continue reading