Exponential growth and epidemics
3Blue1BrownYouTube ↗
Further reading 1
Caption notes
Proportional daily additions yield exponential growth. Accounting for the remaining susceptible fraction changes the mechanism: an initially similar curve can bend later.
Creator’s caption track ↗Original passages · 2
Exponential growth means that as you go from one day to the next, it involves multiplying by some constant.For a random shuffling model like this, that could mean including a factor like 1 minus the proportion of people in the world who are already infected.