So, to a stickler E.A. analysis, community service missions can be actively harmful because it would be more moral to spend the money elsewhere. This sort of thinking is not universal among the movement’s adherents; it is entirely possible to recognize the limits of this economics-style optimization problem as a philosophy. But when that possibility is pushed out of mind, or actively attacked, such analysis can rapidly lead to some very unsavory moral positions.
Take, for instance, Sam Bankman-Fried, who subscribed to the E.A. movement’s more radical offshoot, longtermism. In SBF’s mind, spending a dollar to help save a life today would be a waste when that dollar could instead be invested in the development of new technologies that could theoretically save thousands or millions of lives in the distant future. With enough navel-gazing, SBF appears to have convinced himself that a utilitarian course of action could include purchasing the island-nation of Nauru and setting it up as a doomsday bunker from which a select few effective altruists could repopulate the planet after an apocalyptic scenario. Deranged, eugenic, and laughable, you might say, but if you give an insular group of E.A.s enough time and space to stew in their own juices, just about anything can seem rational.
Think back to the fundamental idea that we can objectively decide how much to “weight” the good done to different individuals. Any attempt to refine such an analysis runs into the problem that the “solution” to your optimization problem will be different depending on how weights are assigned. And you can get better results if you prioritize certain subpopulations. For example, if you have limited funding for cancer research, you will get wildly different resource allocations depending on if you weight each life the same versus if you prioritize maximizing years lived post-treatment. If everyone counts the same, there will be comparatively more funding flowing toward cancers that impact older adults. If we weight by years of life post-treatment, the focus will be much more on pediatric cancer.