How much time would it take 2 human beings (Adam and Eve) to populate the enitre world?

[StandardUser]

Ive read somehwere that human population stood between 5 and 7 million at 6000 B.C . Lets say Adam and Eve story is true - how much time would it take them to multiply to our current numbers?(crude math wont do, as of obvious variables like war, disease etc..)

[Chukada1]

Ive read somehwere that human population stood between 5 and 7 million at 6000 B.C . Lets say Adam and Eve story is true - how much time would it take them to multiply to our current numbers?(crude math wont do, as of obvious variables like war, disease etc..)

Never. Two strands of DNA intermixing again and again would mutate until it could no longer produce a healthy human being that could reproduce.

[Sphere]

Here's something to think about. The annual global human population growth rate is currently at ~ 1%. To go from 2 people to 7 Billion people with a 1% population growth it is ...

7x10^9 = 2*1.01^n ===> n= ln(7x10^9/2)/ln(1.01) ====> n = 2,209 years

[Phier]

Here's something to think about. The annual global human population growth rate is currently at ~ 1%. To go from 2 people to 7 Billion people with a 1% population growth it is ...

7x10^9 = 2*1.01^n ===> n= ln(7x10^9/2)/ln(1.03) ====> n = 2,209 years

Seems legit.

[John Doe]

7x10^9 = 2*1.01^n ===> n= ln(7x10^9/2)/ln(1.03) ====> n = 2,209 years

I'll dispute this hypothesis, having 2.02 people the first year.

[Gaidin]

Here's something to think about. The annual global human population growth rate is currently at ~ 1%. To go from 2 people to 7 Billion people with a 1% population growth it is ...

7x10^9 = 2*1.01^n ===> n= ln(7x10^9/2)/ln(1.03) ====> n = 2,209 years

Problem is by definition they start out with a minimum of 50% growth to start.

[Chukada1]

Here's something to think about. The annual global human population growth rate is currently at ~ 1%. To go from 2 people to 7 Billion people with a 1% population growth it is ...

7x10^9 = 2*1.01^n ===> n= ln(7x10^9/2)/ln(1.01) ====> n = 2,209 years

What if China stops its one child policy and everyone can have as many children as they want to support the family farm?

Did I break your equation?

Here's something else to think about. We added 4 billion people to the global population in just the last 50 years.

Advancement of Medicine.
Increased Food production.
Urbanization.

Mao Tse Tung.

China's population increased from 600 million to 1.3 billion in 50 years. Why don't you extrapolate that rate from 2 people to the current population of China.

No. Only stupid people stop to ponder this simple and broken math query.

[John I Tzimisces]

What if China stops its one child policy and everyone can have as many children as they want to support the family farm?

Did I break your equation?

No you didn't.

Advancement of Medicine.
Increased Food production.
Urbanization.

Mao Tse Tung.

China's population increased from 600 million to 1.3 billion in 50 years. Why don't you extrapolate that rate from 2 people to the current population of China.

No. Only stupid people stop to ponder this simple and broken math query.

It's not broken, and your concerns are irrelevant. The equation literally just answers how long it takes to get from 2 people to 7 billion if population grows at 1%. But hey random pointless hostility is cool I guess.

[Sphere]

What if China stops its one child policy and everyone can have as many children as they want to support the family farm?

Did I break your equation?



Advancement of Medicine.
Increased Food production.
Urbanization.

Mao Tse Tung.

China's population increased from 600 million to 1.3 billion in 50 years. Why don't you extrapolate that rate from 2 people to the current population of China.

No. Only stupid people stop to ponder this simple and broken math query.

Are you trying to seduce me?

[Ascarona]

What if China stops its one child policy and everyone can have as many children as they want to support the family farm?

China becomes another third world country like Congo and the world economy collapses?

[StandardUser]

Here's something to think about. The annual global human population growth rate is currently at ~ 1%. To go from 2 people to 7 Billion people with a 1% population growth it is ...

7x10^9 = 2*1.01^n ===> n= ln(7x10^9/2)/ln(1.01) ====> n = 2,209 years

Does your equation includes the average lifespan of 21? Does your equation recogninzes the starting age at which a human starts to mate? Does it include that though reproduction is being done, most of the human population dies before the age of 15 at ancient times? Did it include the 4 year span, which says that a nomad hunter gatherer woman can only carry at her hands one child(in addition to the few tools and food she may carry) and needs to wait at least 4 years or more untill the child can walk on his own and not be watched 24/7 untill she can be pregnant again? What about infanticide that was widepsread around the world, and kept equation from being a perfect "one man for one woman"?

Has anyone ever successfully managed to create something that remotely treats these variables with justice?

[Sphere]

Does your equation includes the average lifespan of 21? Does your equation recogninzes the starting age at which a human starts to mate? Does it include that though reproduction is being done, most of the human population dies before the age of 15 at ancient times? Did it include the 4 year span, which says that a nomad hunter gatherer woman can only carry at her hands one child(in addition to the few tools and food she may carry) and needs to wait at least 4 years or more untill the child can walk on his own and not be watched 24/7 untill she can be pregnant again? What about infanticide that was widepsread around the world, and kept equation from being a perfect "one man for one woman"?

Has anyone ever successfully managed to create something that remotely treats these variables with justice?

I think you should just accept Jesus as your lord and savior.

[Phier]

I think you should just accept Jesus as your lord and savior.

I think he saw through your clever ruse.

[Georgy Zhukov]

Does your equation includes the average lifespan of 21? Does your equation recogninzes the starting age at which a human starts to mate? Does it include that though reproduction is being done, most of the human population dies before the age of 15 at ancient times? Did it include the 4 year span, which says that a nomad hunter gatherer woman can only carry at her hands one child(in addition to the few tools and food she may carry) and needs to wait at least 4 years or more untill the child can walk on his own and not be watched 24/7 untill she can be pregnant again? What about infanticide that was widepsread around the world, and kept equation from being a perfect "one man for one woman"?

Has anyone ever successfully managed to create something that remotely treats these variables with justice?

Assuming the population is growing exponentially, All of these 'variables' are indirectly represented by the growth rate (1%). If the population is growing on average 1% per year, it doesn't matter how its doing that, all you need to know is that percentage to produce an estimate.

If you're looking for some sort of algorithm to give you a precise number of people at any point in time then that would be practically impossible to come up with because there are too many unaccountable variables

[Darth Red]

Moved the discussion from the VV to the Athenaeum

[MathiasOfAthens]

But then everyone drowned and population had to restart from noahs family so thats like 5 or 6 people?

[Sphere]

Here's something else to think about. We added 4 billion people to the global population in just the last 50 years.

[MathiasOfAthens]

Im confused.

[Vizsla]

Im confused.

They say admitting it is the first step to recovery.



Compared to chimpanzees humans are very genetically homogenous. There is more genetic variability in one troop of chimps than there is across the entire human population. Clear evidence that humans must have gone through some sort of population bottleneck at some point.

[Lazarus]

Well there is this theory called the Toba Catastrophe. The theory goes that it endangered humanity, reducing it to the tune of 10,000 people (or something ridiculously small. Enough to fit in most football stadiums.) Is that sufficient to be the bottleneck? (not being sarcastic or facetious, actually asking for confirmation)