Philosophy
The Moral Status of Future Generations in Environmental Ethics
Quick fact
Philosopher Derek Parfit's non-identity problem shows that our actions today don't merely affect future people—they determine who exists at all. This means we can't harm 'future generations' as a group because any given future person wouldn't exist if we'd acted differently, complicating our moral duties to them.
Why this is interesting
You recycle, vote for climate policies, and worry about the planet—but why should you care about people who won't be born for another 200 years? Do they have a claim on us that we can't ignore?
Read the full explanation
Understanding The Moral Status of Future Generations in Environmental Ethics
Think of future generations as the people who will live after we're gone. In environmental ethics, the question is: do we have moral obligations to these people who don't exist yet? At first glance, it seems obvious—we should leave a livable planet. But philosophical puzzles arise. For instance, if we choose high carbon emissions, the specific people born in the future would be different from those born under a sustainable policy. They can't say 'we'd be better off if you had acted differently,' because if you had acted differently, they wouldn't exist at all. So, how can we say we've 'harmed' them? This is the non-identity problem. It challenges our intuitive duty to protect future people. To address this, some philosophers argue that our obligations aren't to specific individuals, but to ensuring good conditions for whoever comes to exist. Others argue for 'impersonal' values—like preserving biodiversity—that matter even if no particular future individual is harmed.
A deeper explanation
The moral status of future generations hinges on whether non-existent beings can have rights or interests that ground obligations. The non-identity problem, central to this debate, shows that person-affecting principles—which say an action is wrong only if it harms someone—fail to capture harms to future people because their existence depends on our choices. This forces a choice between weakening the person-affecting principle (allowing impersonal harms) and accepting that we have no direct duties to future people. In environmental ethics, this boundary matters. If we only owe duties to actual people, then future individuals have no standing, and we could freely deplete resources. But most ethical frameworks reject this, arguing for obligations to future generations as a group—regardless of which specific individuals exist. This is often justified by appealing to impartiality, or by expanding the notion of harm to include 'being wronged' even if not 'harmed' in the comparative sense. This philosophical groundwork shapes real-world policies, such as how we discount future harms in climate economics or whether we should preserve resources for posterity.