While I agree that this approximation works well, your function for predicting the population (especially for humans) is rather generic. I am curious if you have thought about the potential of this argument had you extended this to be capable of holding multiple dynamic variables to more accurately predict populations? Either way the outcome would still produce a value that is much larger than the current population. I quite enjoyed the read, thank you for sharing! I reposted so more people can see it!
RE: More humans currently alive than dead - DEBUNKED!!!!!!