22 Jul '12 08:24>8 edits
This could be in science but is better suited here and will be more fun.
Some simple maths based on reproduction rates indicate that the worlds population could easily reach current levels within 4,500 years from an origin of 2 human beings.
Science tells us that human beings have been round for what, a hundred thousand years, maybe more. Using the same reproductive rates there would by now be more humans on the earth than there is physical space for. So we must have been reproducing so slowly that we would have almost died out before we got going.
So when did we start having more sex?
Some simple maths based on reproduction rates indicate that the worlds population could easily reach current levels within 4,500 years from an origin of 2 human beings.
Science tells us that human beings have been round for what, a hundred thousand years, maybe more. Using the same reproductive rates there would by now be more humans on the earth than there is physical space for. So we must have been reproducing so slowly that we would have almost died out before we got going.
So when did we start having more sex?