ManucodeAll humans who have ever lived
cabron_offsetsGenuinely interesting, but I take it with a good dose of default skepticism.
DiplomjodlerErst are you sceptical about? This is just a visualization of established scientific knowledge.
Data and methods, please. Why are you not skeptical?
Sources and attribution at the bottom Daddio.
Based on the historical estimates from Toshiko Kaneda and Carl Haub (Population Reference Bureau) and the UN Population Division. Based on a design by Oliver Uberti OurWorldinData.org - Research and data to make progress against the world’s largest problems. Licensed under CC-BY by the author Max Roser
Easy to miss on mobile. And I assume you’ve read this and examined the primary data? And you understand the methods? Because science is not trivial.
not op but i think your skepticism is justified
this seems to be where the image originally came from. the author explains the challenges with making speculations about historical populations in that post. the demographers, toshiko kaneda and carl haub, estimated 117 billion people have lived over the last 200,000 years. here’s the explanation given on the original post:
The majority of them lived very short lives: about one in two children died in the past. When conditions are so very poor and children die so quickly then the birth rate has to be extremely high to keep humanity alive; Kaneda and Haub assume a birth rate of 80 births per 1000 people per year for most of humanity’s history (up to the year 1 CE). That is a rate of births that is about 8-times higher than in a typical high-income country and more than twice as high as in the poorest countries today (see the map). The past was a very different place.
i think this is fairly reasonable, but original source is necessary. i think this is a more originally source, and kaneda and haub are listed as the authors. their methodology seems to rely a lot on guessing, which makes sense. the 117 billion is probably not entirely accurate, but i’d say it’s a good attempt at estimating given what we know. there might be a more detailed paper somewhere but i didn’t really look too hard
I haven’t read the methods. But at the very outset, I question the modeling of birth and death rates from ages before the advent of agriculture. This, immediately, gives me pause.
yes, you’re definitely right. the accuracy is dubious no matter what. in the author’s words, their approach is “semi-scientific” and “guesstimating”. not once do they say their results are definitive. but if it’s the best qualified demographers can do with what we know, then there’s not much else to it