Alan: Some argue that population is in fact self-correcting, and that the correction is already underway. But it’s a little like saying a house fire is self-correcting, because it will eventually put itself out. Unfortunately the damage is done. One way or another, when a species exceeds its resource base, the population will come down. Nature does that in 100 percent of the cases in the history of biology. The question that I keep coming back to is how soon is that going to happen?
Andrew: And will it be in time?
Alan: Exactly. If our population is coming down because nature is going to do it for us, well, it’s going to be, frankly, unpleasant to watch. When nature does in a horde of locusts because they eat themselves out of sustenance, it’s interesting for us to observe. When it happens to our own species, it’s not going to be very pretty.
The whole reason for writing this book was to ask the question, should we take the responsibility to try to manage population decline gracefully, and possibly speed it up? We can do it humanely if we decide to manage it rather than let nature take its course.
Andrew: Is it the sheer number of people or is it the amount that we consume that matters, particularly in the so-called developed nations. Or is it simply that we live too long?
Alan: The answer to all of that is yes. All of those things are involved. I’m always curious about what people are thinking when they say, “It’s not population; it’s consumption.” Who do they think is doing all the consuming? The more consumers there are, consuming too much, the more consumption.