Giles says effective altruism 'forces all human need to express itself on a single comparable scale because of the giver’s rather nerdish requirement that the world possess some sort of measurable order'.
But surely the world does possess at least some sort of measurable order? The 'effective altruist' needn't suppose the right thing to do is always entirely measurable/rationally calculable. They need suppose only that in so far as we can calculate the most effective way to give, we should. What's wrong with that?
Giles raises a glass to the followers of effective altruism while at the same time taking the opportunity to patronise them as 'nerdish', 'evangelical', and 'blinkered'. Why? I guess because they're atheists, and he doesn't want folk rejecting church and attending their meetings instead.