@Dragline - GRS is Get Rich Slowly. Once the king of pf bloggers and home of the mighty JD Roth before he sold it for an unknown but rumoured to be a rather large sum (seven-figs?!) of money.
@Fish - Have we defined and characterized all the levels we're aware off? I think yes and no. Yes, because after 4 pages, I don't see any indication of new levels being suggested (exception wrt level 8, see below)---in particular, I can fit all new suggestions into the existing framework; and because based on the type of objections so far ("isn't ERE just a collection of independent parts?!") or the type of suggestions ("let me make a list that is entirely scaled according to how many millions one has in the bank", e.g. the moneyboss and Joshua Sheets scales) I would be entirely comfortable assigning these perceptions to already existing levels in the jacob-table. I revised it a few times in the beginning, but after two pages in the thread, it's now useful enough for my purposes to have fully converged (within accepted uncertainty and accounting for a few non-financially-oriented outliers who either just started or hasn't gone through the financial track or simply find the financial vernacular of the table rather useless for their purposes, namely, brute, 7wb5, and Ego).
And no, because by construction, we can't really define levels we're not even really aware of. Insofar I'm concerned, this only has bearing on level 8 (and possibly higher). Similar to the class-problem you quote. It's very hard to know what one doesn't know and very hard to construct a framework if one only has "local" knowledge of the range. It seems that it's pretty clear (to some) that the focus and paradigm columns more or less follow the
Dreyfus model of skill acquisition when described in personal finance terms insofar the focus is mostly about money and FIRE (and this holds for 95% of everybody here and on pf blogs). I really like the Dreyfus model but an alternative to the Dreyfus model is the Bateson model (IIRC, I've linked to both models somewhere) above. I think Bateson is way too abstract/wide to be of practical use. I also think the Dreyfus model explains (maybe incorrectly) the Wheaton observations to some degree. E.g. if a system/ERE or table is interpreted as a collection of equally important parts that must be interpreted in a rigid way (by means of a number) then it might not be easy to accept that others are willing to prioritize different aspects of the system or table depending on circumstances and draw conclusions that aren't based on strict computation. In particular, it will be hard to explain to the typical Dave Ramsey client or even the average Boglehead what exactly ERE is because in their world, what they see, is extreme sacrifice and eating lentils. They're blind to seeing the world as flows or the crucial difference of thinking in systems instead of lists of independent parts.
For example, on this forum there's a distinct difference in the interpretation of ERE itself that generally falls into two camps, almost. One where ERE is just an earlier kind of normal early retirement. The focus/paradigm here is mostly one of faster accumulation coupled with a reduction in expenses and so I'd say that's a 3 or 4 in my table. And then one where ERE is a systems theoretic web-of-goals approach that requires integrating a lot of different parts so that the sum of the whole has an even greater efficiency (level 7) than looking at the efficiencies separately (level 6) or just optimizing each efficiency individually (level 5).
So going back to the the question of exactly what level 8 is, if we stick to Dreyfus, level 8 to me is
mastery. This is the point where one has
situational recollection, holistic recognition, intuitive decision, absorbed awareness
The difference between level 7 and 8 is that awareness becomes absorbed (=passive or not actively thinking) rather than actively monitored (=conscious effort required). In other words, the learning is complete. The person no longer thinks about it. The building is done.
Edit: It could be that the real end-level of mastery is at 10 and so I'm missing the evolution through 8 and 9 but I have no idea what those would be insofar we stay inside the personal finance domain.