As far as I understand, this post decomoses 'impact' into value impact and objective impact. VI is dependent on some agent's ability to reach arbitrary value-driven goals, while OI depends on any agent's ability to reach goals in general.
I'm not sure if there exists a robust distinction between the two - the post doesn't discuss any general demarcation tool.
Maybe I'm wrong, but I think the most important point to note here is that 'objectiveness' of an impact is defined not to be about the 'objective state of the world' - rather about how 'general to all agents' an impact is.
I think this post is broadly making two claims -
Impactful things fundamentally feel different.
A good Impact Measure should be designed in a way that it strongly safeguards against almost any imperfect objective.
It is also (maybe implicitly) claiming that the three properties mentioned completely specify a good impact measure.
I am looking forward to reading the rest of the sequence with arguments supporting these claims.
Seems like this has been done already.
Enjoyed reading this. Looking forward to the next posts in the sequence.