Longtermism: Shaping the Future of Human Civilization
Most of our ethical frameworks focus on the immediate present or the near future. However, the concept of longtermism—an ethical stance that prioritizes the improvement of the long-term future—suggests that our current actions could have an astronomical impact on the trajectory of sentient life. We currently stand at a critical juncture where rapid technological, social, and environmental changes grant us unprecedented power to influence how and when the most significant shifts in human history occur.
According to philosopher William MacAskill, we can improve the future through two primary levers: ensuring the survival of civilization by averting permanent catastrophes (increasing the quantity of future life) and altering the trajectory of civilization to ensure it is a positive one (increasing the quality of future life).
[ไม่มีภาพประกอบ]Key Facts
- Core Premise: Future people possess the same moral value as people living today.
- Scale: The future is potentially immense, meaning far more people could exist in the future than have ever lived.
- Primary Risks: Engineered pathogens and misaligned Artificial General Intelligence (AGI) are cited as the most severe extinction threats.
- Value Lock-in: The risk that a single value system persists indefinitely, potentially driven by AGI.
- Career Impact: Professional choice is identified as the most significant individual decision for creating lifetime positive impact.
The Foundations of Longtermist Ethics
The argument for prioritizing the long-term future rests on three fundamental premises. First, there is the moral claim that people who will exist in the future count as much as those alive today. Second, the sheer scale of the future suggests that humanity could survive for millions of years, potentially supporting a population far larger than current levels. Third, our current actions can significantly influence whether that future is exceptionally good or devastatingly bad.
Influencing the Trajectory of Civilization
Improving the future is not just about survival, but about the values that guide us. MacAskill argues that moral and cultural values are malleable and contingent. For instance, the abolition of slavery was not an inevitable economic or moral certainty, but a result of specific historical shifts.
The Danger of Value Lock-in
A significant concern is value lock-in, an event that causes a single value system to persist for an extremely long time. This could happen if a specific set of values becomes embedded in a dominant global system, particularly through the development of Artificial General Intelligence (AGI)—AI that possesses the ability to understand or learn any intellectual task that a human being can.
[ไม่มีภาพประกอบ]Safeguarding Humanity Against Collapse
To ensure the quantity of future life, we must mitigate risks that could lead to extinction, unrecoverable civilizational collapse, or long-term stagnation.
Extinction and Collapse
The most acute threats of total human extinction are identified as misaligned AGI and engineered pathogens. While other threats—such as nuclear winter, fossil fuel depletion, and extreme climate change—could cause a civilizational collapse, MacAskill suggests that civilization is generally resilient and recovery from such a collapse is likely.
The Risk of Stagnation
Technological and economic stagnation is another concern. While indefinite stagnation is unlikely, a period of hundreds or thousands of years of stagnation is plausible. This is dangerous because it increases vulnerability to extinction and may result in a future society guided by inferior values compared to those we hold today.
Population Ethics and the End of the World
Evaluating the tragedy of human extinction requires an analysis of population ethics—the study of how many people should exist and what constitutes a "good" life. MacAskill posits that preventing future people from existing is a moral loss if their lives would have been sufficiently good. Consequently, the early extinction of the human race would be an enormous tragedy. He remains optimistic, however, suggesting that the future will likely be positive because future generations are asymmetrically motivated to create good outcomes rather than bad ones.
Taking Action for the Long Term
Translating these theories into action involves prioritizing problems based on the level of certainty and the potential for impact.
| Risk Category | Examples | Recommended Action |
|---|---|---|
| Robustly Good Actions | Climate change, biosecurity, pandemic preparedness | Research and advocacy |
| High-Uncertainty Risks | AGI risk, great-power wars | Learning and building options |
| Individual Impact | Career choice, philanthropy | High-impact professional work and donations |
For individuals, the most impactful decision is the choice of career. This is the focus of 80,000 Hours, a nonprofit dedicated to researching which careers provide the greatest positive impact from a longtermist perspective. Additionally, donating to effective longtermist organizations is viewed as significantly more impactful than making changes to personal consumption habits.
[ไม่มีภาพประกอบ]Frequently Asked Questions
What is the main goal of longtermism?
The main goal is to prioritize the long-term future by ensuring the survival of civilization and improving its overall trajectory to increase the quality of future life.
What is "value lock-in"?
Value lock-in occurs when a single value system becomes dominant and persists for an extremely long time, potentially preventing future moral progress. This is a particular concern regarding the development of AGI.
Which threats are considered the most severe for human extinction?
The most severe threats are identified as misaligned artificial general intelligence and engineered pathogens.
How can an individual contribute to longtermist goals?
Individuals can have the most impact by choosing a high-impact career—supported by research from organizations like 80,000 Hours—and by donating to effective longtermist causes.
Is civilizational collapse the same as extinction?
No. While extinction is the permanent end of humanity, civilizational collapse refers to a severe breakdown of societal structures. MacAskill suggests that civilization is resilient enough that recovery after a collapse is likely.