We’ve spent the last few million years evolving big brains, and we won’t un-evolve them in short order. Further, encouraging dull-wittedness and ignorance would result in terrible short-term consequences (as we Americans are likely to discover during the second Trump presidency). Moreover, intelligence is cool: it gives us art, music, literature, science, mathematics, and so much more. At least some of these achievements and abilities are arguably worth saving. So, what’s our best long-term plan to avert self-destruction, given that intelligence is now baked into our species?
There are those who say the solution lies in realizing that we fixate on just one kind of intelligence—linguistic, rational thinking—to the exclusion of others, and that we’d be better served by nurturing multiple intelligences, including musical, interpersonal, intrapersonal, spatial, bodily-kinesthetic, naturalist, and logical-mathematical. That’s good advice as far as it goes. But we’re unlikely to heed it sufficiently until we acknowledge why we came to rely so much on linguistic intelligence in the first place: it gave us power over our environment and over one another. So, our dilemma is as much one of ends (power) as means (language-based intelligence). In addition to needing a counterbalance to linguistic intelligence, we also need a way to check our individual and collective pursuit of excessive power.

Our core ecological problem is not climate change. It is overshoot, of which global warming is a symptom. Overshoot is a systemic issue. Over the past century-and-a-half, enormous amounts of cheap energy from fossil fuels enabled the rapid growth of resource extraction, manufacturing, and consumption; and these in turn led to population increase, pollution, and loss of natural habitat and hence biodiversity. The human system expanded dramatically, overshooting Earth’s long-term carrying capacity for humans while upsetting the ecological systems we depend on for our survival. Until we understand and address this systemic imbalance, symptomatic treatment (doing what we can to reverse pollution dilemmas like climate change, trying to save threatened species, and hoping to feed a burgeoning population with genetically modified crops) will constitute an endlessly frustrating round of stopgap measures that are ultimately destined to fail.

During the last 200 years, per capita energy usage grew eight-fold, while human population expanded at about the same rate. As a result of energy growth, all the things we do with energy became more doable. Transportation, manufacturing, agriculture, and mining exploded in scale. Energy became so abundant that it seemed we could solve any human problem, now or in the future, just by throwing more energy at it. We even reconfigured our economic system so that it assumes and requires perpetual growth. But growth in fossil-fuel energy can’t continue much longer: depletion and climate change will see to that. And even if we make a wholehearted effort to switch to low-carbon energy sources, we face limits to nature’s supplies of materials with which to make solar panels, wind turbines, nuclear reactors, and batteries.