6 people to 1 billion in under 1 thousand years

I did this rough calculation as I was interested in knowing how fast population growth was possible. If there are any mathematicians or anyone good at maths who sees an error or issue I would be interested to correct the process.

the result of this calculation lends weight to the earth and universe being much younger than is promoted in mainstream education and media.

this calculation is based on an initial 6 people, 3 couples, and with an average of 4 offspring for each couple throughout the generations. I thought 4 was quite a modest and reasonable average as the majority of families before contraception would probably have had in excess of 4 offspring, and this number would more than make up the average for the minority of couples who produced fewer or who were sterile.

__________

3 couples- each have 4 children

their 12 children marry into 6 couples and each have 4 children

their 24 offspring marry into 12 couples and each have 4 children

the offspring of 48, marry into 24 couples and each have 4 children producing,

96 offspring, who marry into 48 pairs and each have an average of 4 children producing;

192 offspring, marrying into 96 pairs, have 4 children each producing

384 children, who marry into 192 pairs, each having on average 4 children resulting in;

768 offspring, who marry into 384 pairs, each having 4 children, producing;

1536 children, who marry into 768 couples, having 4 children each producing;

3072 children, who marry into 1536 couples, each having 4 children producing;

6144 children, who marry into 3072 couples, each having 4 children producing;

12,288 children, who marry into 6,144 couples having 4 children each producing;

24,576 children on earth after 11 generations of reproduction, generation average 30 years = 330 years

those 24,576 offspring marry into 12,288 couples each having on average 4 children, producing;

49,152 offspring, who pair off into 24,576 couples and each have 4 children resulting in;

98,304 offspring, who pair off into 49,152 couples and each have 4 children resulting in;

196,608 offspring, who marry into 98,304 couples and each have 4 children producing;

393,216 children, who pair into 196,608 couples and each have 4 children to produce;

786,432 children, who pair into 393,216 couples each having on average 4 children producing;

1,572,864 – 1 and a half million global population after 17 generations of reproduction, with an average of 4 offspring per couple, in an average generation of 30 years. 510 years

that 1,572,864 population then pair into 786,432 couples and each have an average of 4 offspring producing;

3,145,728 children, who then pair into 1,572,864 couples and each have 4 children producing;

6,291,456 children, who then pair into 3,145,728 couples and have 4 children each producing;

12,582,912 children pair into 6,291,456, who have 4 children each producing

25,165,824 children marry into 12,582,912 couples who each have 4 children producing;

50,331,648 children who pair into 25,165,824 couples, each having 4 children, resulting in;

100,663,296 – 100 million population reached after 22 generations

those 100,663,296 marry into 50,331,648 couples and each produce on average 4 children, resulting in;

201,326,592 become 100,663,296 couples, each producing 4 children, resulting in;

402,653,184 children, pair into 201,326,592 couples, each having 4 children, producing;

805,306,368 offspring, who couple into 402,653,184, each having 4 children, resulting in;

1,610,612,736 children – over 1.5 billion reached after 25 generations x 1 gen. 30 years = 750 years

 

 

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