It seems to me that there are two separate frameworks:
1) the informal Importance, Neglectedness, Tractability framework best suited to ruling out causes (i.e. this cause isn’t among the highest priority because it’s not [insert one or more of the three]); and
2) the formal 80,000 Hours Scale, Crowdedness, Solvability framework best used for quantitative comparison (by scoring causes on each of the three factors and then comparing the total).
Treating the second one as merely a formalization of the first one can be unhelpful when thinking through them. For example, even though the 80,000 Hours framework does not account for diminishing marginal returns, it justifies the inclusion of the crowdedness factor on the basis of diminishing marginal returns.
It seems to me that there are two separate frameworks:
1) the informal Importance, Neglectedness, Tractability framework best suited to ruling out causes (i.e. this cause isn’t among the highest priority because it’s not [insert one or more of the three]); and
2) the formal 80,000 Hours Scale, Crowdedness, Solvability framework best used for quantitative comparison (by scoring causes on each of the three factors and then comparing the total).
Treating the second one as merely a formalization of the first one can be unhelpful when thinking through them. For example, even though the 80,000 Hours framework does not account for diminishing marginal returns, it justifies the inclusion of the crowdedness factor on the basis of diminishing marginal returns.
Notably, EA Concepts has separate pages for the informal INT framework and the 80,000 Hours framework.