Earning to Give Depends on the Cause's Bottleneck

Whether the best contribution is direct work or 'earning to give' depends on each cause's bottleneck: in fields like AI safety, pandemic preparedness, and scientific research there is more demand for competent altruistic people than money, so direct work dominates; whereas in global health and development, proven interventions could absorb hundreds of millions more dollars, making money the bottleneck and earning to give more valuable.