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?