The link https://forum.effectivealtruism.org/posts/fd3iQRkmCKCCL289u/... circles back to itself, with no simple explanation.
The "intro" from the front page has 2800+ words and isn't clear either: https://www.effectivealtruism.org/articles/introduction-to-e...
That intro is itself prefaced with a paragraph in italics that recommends a whole "handbook" for a "more thorough introduction". I'm afraid to click on that for fear it leads to a whole library of volumes discussing general ideas about life, freedom, religion and other minor and trivial concepts.
Why can't organizations' blogs have a simple, clear and easily accessible "about us" link that describes what they do in one sentence.