^Indeed. In the early 1900s Canada's population growth rate was between 2 and 3% annually. Now it is less than or around 1%. Over 100 years that kind of difference on 100,000 population is in the scale of 270,000 versus 1,2000,000 people. Between 1901 and 1911, Winnipeg's population skyrocketed by 12% a year. A year. It's why we don't take growth projections based on past performance very seriously. Sure, it can continue for a few years, but it usually doesn't. Every place is like that.
If Calgary had continued with its growth rate between 1901 and 1911, it would have 334,000,000 people give or take many million. Taking what it had done and halfing that growth rate to be...realistic as it appears Randy's numbers indicate he did.
For comparison
Wininpeg 42,000 -> 136,000, doubling about 1.5 times
Calgary 4,000 -> 44,000 doubling about 3.2 times
All Randy needed to do was look at the growth pattern of older Canadian cities to realize basing estimates as he did is not very meaningful.
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