If the interventions have aggregate impact distinct from individual impact, they’re by definition not identical. There are lots of things that are valuable only in conjunction with other things, or have threshold values for quantities—it doesn’t seem problematic to say “any of these interventions is valueless, but all 4 together are worth $0.6 per $1 I have to invest”.
It’s not an important point—the value of aggregates being different from a simple sum of the components is mostly what I meant to say.
The interventions may be identical for some kinds of measurement, that is, they “feel” the same to the user. But they’re not actually identical if they’re applied to different states of the world and have different results from each other.
If the interventions have aggregate impact distinct from individual impact, they’re by definition not identical. There are lots of things that are valuable only in conjunction with other things, or have threshold values for quantities—it doesn’t seem problematic to say “any of these interventions is valueless, but all 4 together are worth $0.6 per $1 I have to invest”.
Why not? I don’t see how that follows.
It’s not an important point—the value of aggregates being different from a simple sum of the components is mostly what I meant to say.
The interventions may be identical for some kinds of measurement, that is, they “feel” the same to the user. But they’re not actually identical if they’re applied to different states of the world and have different results from each other.