URCall: Time to Double

From the ICR’s URCall series of videos, hosted by Markus Lloyd. “How did we reach 7 Billion people?” (link)

Transcript:

How can we have a world population increase to over seven billion people today from only eight survivors from Noah’s flood, if the Earth is only a few thousand years old? Let’s assume one male and one female marry, and had children, and all their children marry and had children, and so on. Let’s assume, conservatively, that every 150 years the population doubles. After 32 doublings, or 4800 years, the population would reach almost 8.6 billion – which is more than we have now. On the other hand, if modern humans started 50000 years ago, at the same conservative population growth rate, even considering death rates, famine, wars etc, all the people could not even fit on the Earth. So if humans had really been around for millions of years, where did everybody go?

Let’s take a look at the equations. The ICR’s gloriously simplistic model can be written like this.

Doubling formula: Starting population * 2 ^ (Time / Doubling time) = Target population

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Stale Population Growth

Ancient foundations at JerichoWell this is odd: Jeffrey Tomkins’ latest DpSU – Genetics Research Confirms Biblical Timeline – is a rewrite of a story that I’m sure we’ve seen several times before. No new information! I don’t know what’s up, but I didn’t do a great job of covering it the first time so there’s no harm in going over it again from scratch.

Exciting research from the summer of 2012 described DNA variation in the protein coding regions of the human genome linked to population growth.

If really is ‘exiting’ then that might explain why Tomkins has been going on about it long enough for it to be summer in my half of the world now. (On that subject, the Australian bushfires are very impressive this year – it rained ash here on Sunday.) Continue reading

Population Growth

One of the more amusingly wrong creationist arguments is that, if the world is really so old, why aren’t there trillions of us? I mean, evolutionists have to propose millions of years without any population growth at all! How could this be true, if population grows in the geometric pattern P(t) = P0ert?

This is the question asked by the latest B.T. DpSU, Earth Hit the 7-Billion Mark Too Late. Mr Thomas is objecting to a paragraph in a paper called When the World’s Population Took Off: The Springboard of the Neolithic Demographic Transition from a three-month old edition of Science which said:

After the members of the genus Homo had been living as foragers for at least 2.4 million years, agriculture began to emerge in seven or eight regions across the world, almost simultaneously at the beginning of the Holocene.

This must clearly be wrong, as “according to the Bible and historical records, there was never a time when humans weren’t engaged in agriculture.”*

Estimated Population curve, from 10000 BCE to 2000 Continue reading