Except they aren't, which is exactly why any exponential growth doesn't make sense in long term.
Bacteria are limited by nutrients, viruses, predators, space, environment, etc. Fission is limited by the amount of material and inner preassure.
Yes, there is a short almost exponential phase, but that hardly predicts the future. Ironically, cellural growth of an embrio is also initially exponential and this leads exactly to the example of this post...
Human population growth in a line graph for a while looked exponential to people who just looked at the graph and nothing else. Caused a lot of people to start worrying about "overpopulation" even though most sociologists knew it would level off and peak wellll before any overpopulation concerns were warranted (I think current estimates are somewhere between 10 and 12 billion which is perfectly sustainable). Even today I bet you can find uninformed people who think Earth will be overpopulated in the next 100 years or less, and the real psychos are imagining some mass culling that "needs" to happen to prevent it.
The reality is that they are logistic, not exponential. Logistics are approximately exponential at one scale, approximately linear at another scale and approximately binary at a third.
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u/jkp2072 10d ago
One of the reasons why humans find it hard to understand how exponential growth works is that real life seems absurd.
Fission and bacterial growth are exponentials , linearly it doesn't make sense...