Posted by:
East Coast Exmo
(
)
Date: April 14, 2015 03:26PM
If the church membership doubled over the last 25 years, that is equivalent to an average growth rate of 2.8% over that time.
Proof: The 25th root of 2 is 1.02811...
Now look at Figure 3 of the previously linked growth analysis at Mormonism 101:
http://www.mormonism101.com/2015/04/number-of-mormons-to-peak-at-20-million.htmlWe can see that the church's average growth rate fell below 2.8% around 2005 or 2006. This can be hard to tell if you're not used to logarithmic plots. The bottom line corresponds to a growth rate of 0.75%, the line above it corresponds to a growth of 2 * 0.75% = 1.5%, the line above that corresponds to 3 * 0.75% = 2.25% and that line above that corresponds to 4 * 0.75% = 3%.
The church's growth rate was reasonably high in 1990, 25 years ago. The chart shows it at about 5.25%, which would correspond to a doubling time of 13.5 years if that rate were constant.
The church's current growth rate is about 1.5%, which would correspond to a doubling time of 46.5 years if that rate were constant.
Cook's assertion that church membership has doubled in the past 25 years may be true, but it's really just a sound bite to comfort TBMs. That doubling time is nothing special, and it's equivalent to the church's average growth rate in the 1950s.
The church's growth rate is plummeting, and I agree that we are seeing logistic (i.e. sigmoid) behavior in the curve. The size of the church will plateau in the next couple of decades and may even begin to fall.
Note that the above analysis is based on the 10-year moving average growth rate data published at Mormonism 101, which is based on the church's own published figures. That makes it the church's *best* case. From census data (at the very least), we know that the church's numbers are greatly inflated and that the majority of converts to the Mormon church fall away quickly. The true situation is probably much worse.
Cook can try to distract people from what's going on, but that doesn't change reality.