Effective Altruism

Effective Altruism (EA) is a coordination philosophy and movement that applies evidence-based reasoning to determine the most effective ways to improve the world. As a capital allocation framework, EA treats charitable giving as an optimization problem — directing resources toward interventions with the highest expected impact per dollar.

How It Works

1. Cause prioritization — systematic evaluation of which problems are most important (scale, neglectedness, tractability)
2. Intervention analysis — rigorous comparison of specific interventions within priority causes using randomized controlled trials, cost-effectiveness analyses, and expected value calculations
3. Resource allocation — directing funding toward top-ranked interventions and organizations
4. Impact measurement — ongoing evaluation of whether interventions achieve predicted outcomes
5. Iterative improvement — updating beliefs and reallocating based on new evidence

Advantages

• Maximizes impact per unit of resources deployed
• Provides rigorous frameworks for comparing interventions across different cause areas
• Encourages counterfactual thinking — funding what wouldn't happen otherwise
• Creates accountability through transparent methodology and impact measurement

Limitations

• Bias toward quantifiable outcomes over hard-to-measure but important values
• Can underweight systemic change in favor of direct, measurable interventions
• Centralized evaluation by expert organizations concentrates allocation power
• Struggles with long-term, speculative, or paradigm-shifting investments
• Movement has faced criticism for concentration of power and high-profile institutional failures

Best Used When

• Resources are scarce and impact maximization is the primary goal
• Interventions can be measured and compared on cost-effectiveness
• Evidence-based evaluation infrastructure exists
• The goal is direct, measurable impact rather than systemic change

Examples and Use Cases

GiveWell evaluates global health and development charities, recommending organizations like the Against Malaria Foundation where donations produce measurable, cost-effective impact.

Open Philanthropy applies EA principles at scale, directing billions toward AI safety, biosecurity, animal welfare, and global health.

Intersections with web3 include impact certificates (Hypercerts), retroactive funding, and other mechanisms that share EA's focus on measuring and rewarding demonstrated impact — but with more decentralized evaluation.