Church President Probabilities: 10,000 Possibilities

Frequent commenter DaveW used the results of the Monte Carlo simulation from my last post on Church president probabilities to put together this fun follow-up post (and as an added bonus, he corrected an error in my post that came up from cutting off the simulation at 360 months).

I love numbers and spreadsheets and attempts to predict the future that rarely work out, so I’ve been a long time fan of Ziff’s work in projecting the future of the presidency of The Church. Longtime readers will be familiar with his Church President Probability posts going back to 2015. Ziff has done an admirable job of building a model and running 10,000 simulations to compile a view of things that are likely to occur with the presidency of the church. But I’ve always wondered, what about the improbable scenarios? What are the craziest outcomes in his 10,000 simulations that aren’t likely to happen, but still certainly could? Well, Ziff has been kind enough to let me look through his results, and now I guess he’s letting me share them here on ZD.

These uncommon outcomes come from Ziff’s work, so he deserves most of the credit here, but I did make one small improvement. His simulations only went 30 years into the future, which is generally pretty good for talking about the lifespans of senior citizens, but in some instances we needed a few more years to see how things would play out, so I extended his forecasts as much as an additional 20 years, so we can really see the outliers. One impact is that Ziff is slightly underestimating the odds that Kearon will become president some day (it’s more like 38%, not 34%), and the average time as president is a bit higher for the younger apostles (Kearon’s average should be more like 6 years, not 4).

Like all the super hero movies they seem to make now, these 10,000 simulations open us up to 10,000 possible universes. Almost anything can happen in the multiverse. So let’s explore some strange new worlds

World 2803: Some things can last forever?
The Q15 stay very healthy, and Andersen is surprisingly the next to go in 2027. Then Oaks goes in 2031 just before his 99th birthday, followed quickly by Uchtdorf that same year. In 2033 we lose Eyring (99), and Christofferson and Gong. Cook lasts until age 96 in 2037, and Holland until age 99 in 2039. And who is still in the biggest of the red chairs through all of this? Nelson, who makes it to his 120th birthday before finally turning the keys over to Bednar in September 2044. No one else reached 120 in any of the simulations. Eyring was the only one to crack 115, with 1 scenario where he made it to 118. The chart below shows the presidential succession through all the current Q15 for the simulation. (The x-axis shows the month and year.)

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Church President Probabilities, Updated for President Nelson’s Birthday!

Russell M. Nelson turned 100 this week, so it seems like a good time to look at probabilities of who among the Q15 is likely to become Church president in the future. If you’ve read ZD for any length of time, you’ve probably seen me do this before. Here’s my most recent post (and here’s a follow-up post). I’m following the same method I’ve used in the past. Using this handy mortality table produced by the Society of Actuaries, I estimate the probability of each Q15 member having died for a number of times in the future. Then, using the logic of seniority and succession, I can calculate the probability of each member becoming president from the probabilities of (1) all members senior to him dying, while (2) he survives. One small change I made this time versus previous times is that I looked at monthly points in the future rather than yearly points. It’s nice to make more fine-grained graphs, but it doesn’t change the results materially. For more on the method, see the “Method” section in my 2023 post.

This first graph shows each Q15 member’s estimated survival probability out to 30 years (360 months) in the future. Calculating this has always been a step in the process, but I had never graphed it before and I thought it might be interesting to look at. What’s striking, I think, is where a man falls out of line with those near him in succession order. For example, Elder Bednar is between Elders Andersen and Renlund, but of course in seniority, he’s ahead of them, as well as Elders Rasband, Christofferson, and Cook, even though he is younger than they are.

 

This next graph shows probabilities of becoming Church president by year.

 

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