so i guess you're limited to events, decisions and the gold mines then.
Yup, and there's precious few useful triggers for the events and decisions. And I think we've covered the reasons why goldmines are useless. Basically, there's no mechanisms in place to accurately measure the international economy's size at all, so it's effectively certain that the money supply will deviate from the sweet spot eventually.
I generally measure how good a V2 economy is based on it's mean time to crisis; a bad economy can only manage a few years before the money supply and industrial output become completely out of sync. A good economy is one that can average 75 years+ (this is about where the HoD economy stands; after 75 years, you have about a 50% chance of the world running out of cash). Hitting 100 is fiendishly tricky; going beyond is almost entirely a matter of luck rather than skill, because the number of possible industrial output levels by then is enormous. I've seen maybe 4 economies out of all versions of all of the mods for V2 which can claim to regularly beat 100 years, and most of those are for AHD.
You need to try to hit a small window with about 10% leeway to either side of exactly enough money for total world GNP. Price fluctuations allow for the game to correct a slight money shortage or oversupply, but beyond this buying order begins to cause other problems - too much money and the top nations begin to starve all the others by consuming all the goods, too little and the entire economy collapses.
The one way which would be fairly certain to avoid the money supply issue is something like VRRP's Jan Mayen aristocrats; they were pretty much infinitely wealthy and so acted as a source of income (in fact, they were effectively just a re-implementation of the V1 WM). It's rather ironic, really; Konrad didn't even know the money problem existed when he implemented the idea. Of course, even though it eliminated the money supply issue, their presence caused all sorts of other problems which made the economy unstable in other ways; Konrad's endless hours simming everything in spreadsheets were largely wasted because there were many variables at play we simply didn't know about back then. More than once we both had to re-write from scratch based on a newly-discovered link between different factors.
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