We need to drop the term “neglected”. Neglectedness is crowdedness relative to importance, and the everyday meaning is “improperly overlooked”. So it’s more precise to refer to crowdedness ($ spent) and importance separately. Moreover, saying that a cause is uncrowded has a different connotation than saying that a cause is neglected. A cause could be uncrowded because it is overlooked, or because it is intractable; if the latter, it doesn’t warrant more attention. But a neglected cause warrants more attention by definition.
We need to drop the term “neglected”. Neglectedness is crowdedness relative to importance, and the everyday meaning is “improperly overlooked”. So it’s more precise to refer to crowdedness ($ spent) and importance separately. Moreover, saying that a cause is uncrowded has a different connotation than saying that a cause is neglected. A cause could be uncrowded because it is overlooked, or because it is intractable; if the latter, it doesn’t warrant more attention. But a neglected cause warrants more attention by definition.
More: https://forum.effectivealtruism.org/posts/fR55cjoph2wwiSk8R/formalizing-the-cause-prioritization-framework