thinking about it more, brute thinks a definition of ERE should be considered. from the wiki:
Early Retirement Extreme (ERE) is a movement of individuals integrating ideas from anti-consumerism, DIY, the Renaissance man ideal, home economics, individualism, environmentalism, and rentier capitalism toward the goal of achieving financial independence extremely rapidly.
shortened:
Early Retirement Extreme (ERE) is a movement of individuals integrating ideas from various domains toward the goal of achieving financial independence extremely rapidly.
for brute, this defines ERE, and separates it from other FI approaches. instead of defining FI as a financial problem only, and trying to solve it exclusively with financial means, ERE utilizes any strategy or tool from any domain that could help.
this is why it's so hard to define progress or levels in any particular domain - every individual doing ERE likely has different domains they're picking from, and therefore exists in different dimensions.
if the goal of ERE is to reach FI, and FI is defined as "not having to work and be comfortable", that is really the only scale that all ERErs have in common. but there is an infinite number of ladders humans can use to climb this scale, and while individual ladders can be graded, the collection of ladders a human uses may be unique.
things that can be judged could be, to what degree does an individual's strategy fulfill his needs/comforts (% FI), and maybe how diversified is it. for example, a human with a 75% savings rate and 80% to his FI goal, even from a single job, is "more ERE" than another human with 5 independent gigs, but who barely scrapes by from doing them (all other things being equal). on the other hand, if two humans are already FIRE, but one is 100% invested in micro cap developing world stocks, whereas the other has 20% investment income, 20% social capital, 20% in gardening/cooking skills, 20% in a trade that's also a hobby (engine repair, carpentry), and 20% in.. whatever, that person might be judged a more resilient EREer.
in addition, fixed levels aren't necessarily useful. if a human FIREs on level 10 salaryman, but is a level 2 in everything else, is that level 10 a useful comparison for anyone else? brute thinks not, unless they're on the same ladder at level 8-9.
also brute thinks humans can go negative in probably all domains. brute thinks about humans starting out their first job with 100k in student loans, or parents to support (negative social capital), or so unhealthy they're below average (think obese and almost immobile). probably true for all or most domains. it can be very helpful to these humans to learn how to dig themselves out of that hole. brute thinks Dave Ramsey is almost exclusively focused on people with negative financial positioning. the 0 could be a human with a net worth of zero.
the columns in jacob's picture are the dimensions in this model. the difference being that they're all optional, and they can go into the negative, and they're not as set in stone as steps 1-10.
for this reason, and if the goal is to help people and "collect them where they stand", vs. "where they should be standing", brute thinks that a map is a better analogy than a matrix/grid/scale. from a mental models standpoint, a map doesn't judge humans on where they are, nor where they want to go. it's clear that anyone looking at a map can have a different goal, and is at a different position. and while most humans imagine a 2-dimensional map, one could draw lots of lines through one point that serve as the "dimensions".
another analogy brute likes are building blocks. every EREer probably wants to build something different, and even if 2 want the exact same lifestyle, they can build it using different blocks, coming from the many different domains.
in contrast, a fixed matrix with fixed levels implies that these are the exact domains that must be utilized for ERE, and that it's clearly better to be higher in every level - the goal being 10 in each of the few fixed domains.
this is the antithesis to the flexibility and systems approach model of ERE, and unlikely to produce helpful advice.
brute still thinks it's useful to have advice for humans that utilize category X at stage Y, and thinks that recommending stage Y+1 or categories X-1 and X+1 are great. but he would frame it more as suggestions, and less like a grading system.
there are already plenty of pages for individual domains in the wiki. these could contain an overview of different stages, but it wouldn't have to be exactly 10 levels. they could still roughly be sorted by how much they escalate. they would not need to have numbers.
if jacob encounters a human that just opened a brokerage account, he could say this: "oh wow that's cool, jacob also has a brokerage account. after opening it, he really enjoyed reading Bogleheads and A Random Walk Down Wall Street to help him get his head around it". no need for numbers.
in this case, the ERE wiki could just have a list of different stages under "investing", of which "opening brokerage account and buying random shit" and "index funds" are probably the first 2 steps.
if jacob encounters a human that just bought a house, he can say "jacob owns a house too, does derp (the human's name) plan on living in it or renting it out? jacob also heard that people rent out their spare rooms on AirBnB to make extra income, like a hotel. also, there's so many cool home projects derb can do like remodeling the kitchen. it'll increase the home's value, too!"
in this case, there could be transfer from one category to other close ones: real estate, renting it out, home improvement skills. the top of the wiki page of "real estate" could simply have links to similar/synergistic categories.
this would probably be somewhat crowdsourced. if jacob tried to model everything about ERE himself.. strike that. because jacob tried modeling everything about ERE himself, his grid level system is essentially grading people on how jacob they are. ERE is too flexible and specific for that. but there's a pretty diverse set of humans on this forum, so brute thinks that a somewhat crowd sourced "manual" on how to subtly push other humans towards their level + 1 in any ERE related area could be pretty useful.