There have been several debates here on Gristmill lately about capitalism, consumerism, communalism, corporatism, and, you know … The System. It’s worth remembering some crucial context.

Somewhere in the early 1800s, the number of human beings on earth reached a billion. In the 1920s, it reached two billion. In 1960, three billion. Four billion in 1974. Five billion in 1987. Six billion in 1999.

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By around 2045, there will be nine billion people on the planet.

Now, I don’t want to start one of the interminable debates about population that exercise the environmental community and bore everybody else.

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It’s just a fact of note that a world with 9 billion homo sapiens on it is fundamentally different than one with a billion on it.

So the obvious answer to the question of "how should 9 billion human beings best organize their collective affairs?" is:

No. One. Knows.

The past is no longer prologue. Maybe capitalism can keep up? Maybe some reversion to localized communalism? Maybe some combination? Or maybe it’s just impossible for 9 billion people to live on earth without causing widespread misery and disaster. Maybe no "system" can handle it.

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We’re in uncharted territory. A little humility is called for all around.

That’s all.