JumbleDuck
Well-Known Member
Your "if unchanged" is key here. It must change, because exponential growth (which means a growth rate proportional to the number infected) can only continue when the population is effectively infinite. Once a significant number of people are infected the rate has to reduce, because a smaller proportion of contacts will be susceptible. Eventually, and obviously, the growth rate reaches zero when everybody has had it.For example, in the UK deaths have been rising at an exponential rate which, if unchanged, will lead to 2 million deaths a day by the end of April.
You clearly understand, but I am deeply frustrated by the number of people who project exponential growth indefinitely. They are probably the same people who think that multi-level marketing schemes and chain letters work.
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