I have trouble both with Effective Altruists' claims that they can actually quantify human well-being to the point to where if you spend $X, you'll get $Y benef

I have trouble both with Effective Altruists' claims that they can actually quantify human well-being to the point to where if you spend $X, you'll get $Y benefit out of it, and without that, the entire point is lost. Even if you could, with a fair amount of certainty, say that for every $40 that the Yurt charity gets, they'll build 3 homes, there's a pretty hard limit on how many $40's they'll be able to turn into homes. Eventually they'll run out of qualified people willing to build homes for peanuts. Charity simply doesn't scale. The more you try, the more it just looks like regular old business. EA could very well be a viable philosophy at the low volumes that participate right now, but if they're successful as a movement, whatever they build is just going to turn into another Red Cross. The Red Cross couldn't scale appropriately, and I highly doubt it was due to any lack of can-do willingness.