Re Top Charities vs All Grants, you can read it in the linked evaluation on GiveWell: https://docs.google.com/document/d/1rn1d69KR3zfVzZaRZvSZNp1vcDap1hudzxngNqeFHuc/edit. As I read it, it's both - and an evaluation of GiveWell as an advisor overall.
GWWC picked Deworming as a probe into the difference between All Grants and Top Charities, and came away with the expected conclusion. Paraphrased: "AGF recommendations are highly impactful in expectation but with a wider outcome space (higher uncertainty either way)".
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I updated the post to reflect this.
At Giv Effektivt (Denmark), we're looking towards expanding from Global Health to multiple cause areas by next summer (2024), probably starting with a limited set of options. Your work here will play an important role in those decisions. Thanks!
A fun meta-reflection: where will this chain of evaluations stop? Will there be an evaluation of evaluator-evaluators? Evaluations all the way down? I guess whatever goes down in the comments here will be exactly that.