It seems like when you say “tractability” what you’re really discussing is the ease of measuring the intervention?
You write:
The distribution of golden rice seems to be as tractable as bed nets to fight Malaria. It is easily possible to conduct RCTs between villages or regions and VAD is overall easily measurable. Furthermore, the selective legalization by some countries (e.g. the Philippines) might actually yield some natural experiments in the near future. Other interventions such as lobbying and campaigning are likely much less tractable.
This doesn’t really say anything about how tractable the intervention itself is, but rather how straightforward it would be to measure (which is important, of course!)
In the next section “Further Thoughts” you talk about the chances that golden rice gets legalized, which you think are slim. That seems to be the biggest point in whether this intervention is tractable, rather than the ease of measuring the impact from the intervention.
It seems like when you say “tractability” what you’re really discussing is the ease of measuring the intervention?
You write:
This doesn’t really say anything about how tractable the intervention itself is, but rather how straightforward it would be to measure (which is important, of course!)
In the next section “Further Thoughts” you talk about the chances that golden rice gets legalized, which you think are slim. That seems to be the biggest point in whether this intervention is tractable, rather than the ease of measuring the impact from the intervention.