Thanks to Justin Fitzpatrick at Nerd’s Eye View for his recent article reminding us that planning assumptions about the future (in his article, mortality/longevity assumptions) are just assumptions that may not (generally won’t) be exactly realized as actual future experience emerges. He suggests that such assumptions should be monitored and tested periodically so that the risks to the client’s plan resulting from differences between actual future experience and assumed experience can be assessed and communicated to the client for the purpose of possibly changing the client’s plan.