Perhaps our greatest distinction as a species is our capacity, unique among animals, to make counter-evolutionary choices.
Interpretation
Humans have the ability to make choices that can go against natural evolutionary trends.
In this quote, Jared Diamond suggests that unlike other animals, humans possess a remarkable capability to make decisions and take actions that do not follow the dictates of natural evolution. This ability allows us to challenge and alter the course of our development, for better or worse, through conscious choices, ethics, culture, and technology, which can lead to both progress and potential pitfalls.
In practice
During a lecture on human evolution, you might cite this quote to discuss the unique decision-making abilities of humans.
For anyone inclined to caricature environmental history as 'environmental determinism,' the contrasting histories of the Dominican Republic and Haiti provide a useful antidote. Yes, environmental problems do constrain human societies, but the societies' responses also make a difference.
The metaphor is so obvious. Easter Island isolated in the Pacific Ocean — once the island got into trouble, there was no way they could get free. There was no other people from whom they could get help. In the same way that we on Planet Earth, if we ruin our own [world], we won't be able to get help.
But this was the only way of life that humans knew for their first 6m years on the planet. In giving it up over the past few thousand years, we have lost our vulnerability to disease and cold and wild animals, but we have also lost good ways to bring up children, look after old people, stave off diabetes and heart disease and understand the real dangers of everyday life.
We scientists have fantasies of being uniquely qualified to make great discoveries. Alas, reality is cruel: most of us are replaceable. For the vast majority of scientific contributions, if scientist X hadn't achieved it that year, scientist Y would have achieved the same result or something very similar soon thereafter.
All human societies go through fads in which they temporarily either adopt practices of little use or else abandon practices of considerable use.
AIDS and malaria and TB are national security issues. A worldwide program to get a start on dealing with these issues would cost about $25 billion... It's, what, a few months in Iraq.
Let us settle ourselves, and work and wedge our feet downwards through the mud and slush of opinion and tradition, and pride and prejudice, appearance and delusion, through the alluvium which covers the globe, through poetry and philosophy and religion, through church and state, through Paris and London, through New York and Boston and Concord, till we come to a hard bottom that rocks in place which we can call reality and say, "This is and no mistake.
In a dream you are never eighty.
The technocrat is the natural friend of the dictator—computers and dictatorship; but the revolutionary lives in the gap which separates technical progress from social totality, and inscribed there his dream of permanent revolution. This dream, therefore, is itself action, reality, and an effective menace to all established order; it renders possible what it dreams about.
Our government's got a war on drugs. That's certainly better than no drugs at all.
And so you're afraid of the emptiness of your friend's life. But there's no emptiness in the life of a man of knowledge, I tell you. Everything is filled to the brim and everything is equal.
Part of me suspects that I'm a loser, and the other part of me thinks I'm God Almighty.
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