>>>There is a test tube with a microbe on the bottom.
>>>It looks around and decides to breed. Soon there
>>>are two microbes. A few days later there are four
>>>microbes. A small microbe society begins to form.
>>>After a day or two the test tube is ten percent
>>>full and it's microbe heaven. Then twenty and then
>>>forty and fifty percent. Life for the microbes is
>>>good. With the tube fifty percent full they look
>>>around and see lots of room for expansion. Unfortunately,
>>>they haven't paid too much attention to the fact that
>>>their species has expanded at almost an exponential
>>>pace and they are at fifty percent. The next time they
>>>breed they'll be swimming in their own poop as they die.
>>>Well, folks the test tube is the earth and we are the
>>>microbes and we are at about fifty percent planet occupation.
>>>What will we do?
>>
>>How long is a microbe day in earth days? A hundred-thousand to one maybe? I think we're ok of awhile.
>Nope
>http://www.livescience.com/strangenews/060224_world_population.html

I wasn't refuting our population, just that the growth rates are relative. I think it will be a long time before we will all die from swimming in our own poop.