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Show HN: A central bank simulator game with a realistic economic model

benoitessiambre.com

121–130 of 323 posts

Re: Show HN: A central bank simulator game with a realistic economic model

#121
post #40

I tried to keep inflation between 1.5-2% for the first 50 months and then decided to find out what happens if I YOLO permanently fix the interest rate to -0.5%. After the 240 months I somehow ended with GDP 442999 and 1.53% inflation. How come? Shouldn't I have a runaway inflation?

I fought inflation in SimCB and my economy produced 442549

Started with 0.25% and when the random events happened, adjusted rate really fast to get inflation to no more than 1% for ~6ticks

Re: Show HN: A central bank simulator game with a realistic economic model

#122

Earlier quoted context omitted.

Thank you so much! I've similarly been trying to wrap my head around monetary things recently, and as with learning anything in physics (my field), I believe you don't really understand a model unless you can code up a simulator. It's been maddening not being able to find a comprehensive model of how all the bits fit together, and I have many times wondered if the lack of existence of a game like yours meant that no…

I've been looking for something similar too, an explanation of the financial system written out in code so that I can try understand it.

While we are at it: I need this for climate change as well

Re: Show HN: A central bank simulator game with a realistic economic model

#123

442,329 by controlling interest to keep inflation as close to 1.5% as I could (which isn’t always easy). 442,306 by just immediately setting interest at -0.5% and leaving it there entire time. Inflation varied widely, but seemed to correct itself around 12% and -4% and spent a lot of time near 0%. Can anyone explain an economic theory why that happened, or is the game not reflective of reality?

443,276… this one the strategy makes sense too… stay at 2% until 115 month and drop to 0.5% by 120, when the production drops 12%. Stay at 0.5% until 175 and crank interest to 1.0% by 180, when people spend 10% less. Stay at 1% rest of the game…

Edit: New highest known score… 443,385, basically same strategy. 2.25% at beginning, down to 0% during drought, up to 1% when buyers spend less, then jiggle your way till end.

Re: Show HN: A central bank simulator game with a realistic economic model

#124

442,329 by controlling interest to keep inflation as close to 1.5% as I could (which isn’t always easy). 442,306 by just immediately setting interest at -0.5% and leaving it there entire time. Inflation varied widely, but seemed to correct itself around 12% and -4% and spent a lot of time near 0%. Can anyone explain an economic theory why that happened, or is the game not reflective of reality?

In the blog post ( https://benoitessiambre.com/simcb.html ) I explain why it's difficult to get inflation to rise very much under normal circumstances. I think it's mostly because I don't have a government doing deficit spending. You can reach higher scores (through lower menu costs) if you try to maintain lower inflation (like 1% or lower), however keeping it too low can make it harder to keep stable and you will be…

> penalized through menu costs if it destabilizes

Yeah, some of my more aggressive tries had this happen and got lower scores.

What’s the highest you’ve seen?

And thank you for building this!!!

Re: Show HN: A central bank simulator game with a realistic economic model

#125
post #61

Earlier quoted context omitted.

Similarly I immediately lowered to -0.25% and left it there, really quite stable and climbed gradually (not monotically, but close) to 442370. I assume it needs a bit of a tweak for negative inflations, or is limited by the events being fixed - 'people spend 12% less' is more likely to happen at higher interest rates for example. And in particular if we weren't leaving it fixed but had only just lowered it, (i.e. inc…

Isn't a negative interest rate basically UBI?

How so? I don't understand this connection at all.

Re: Show HN: A central bank simulator game with a realistic economic model

#126
post #70

Earlier quoted context omitted.

Can we scam little people with crypto using central bank scapegoating as well ?

As in, scam people and then scapegoat 'crypto bros' for the current financial crisis that has more to do with printing money than anything else?

What financial crises?

Re: Show HN: A central bank simulator game with a realistic economic model

#127
The model is missing the external factors if currency price and foreign import prices of goods and demand for your own currency. CB decisions have been greatly cushioned by the fact that the US currency is reserve currency of the world at this time and instability elsewhere makes it remain such. If apple prices go up, demand can go abroad and that changes the dynamic for when you change interest rates (can farms support themselves when the price of applies is pushed down by imports and your inflation escapes). Thus recovery would look different in an open border world vs closed economy. Then it also compounds for countries such as the EU members where you have some with high exports and others with high debt that share the same currency and pushing one direction always hurts someone.

Re: Show HN: A central bank simulator game with a realistic economic model

#128
post #94

Earlier quoted context omitted.

I've been looking for something similar too, an explanation of the financial system written out in code so that I can try understand it.

Something I found recently is Steve Keen's Minsky , and his book The New Economics , which uses Minsky to go through a series of simple models of the modern fiat money system. http://www.profstevekeen.com/minsky/

I was going to suggest this tool too as I’m not aware of others like it.

Worth the caveat that Keen is a heterodox economist. So if you pull his off-the-shelf models you are not getting the current accepted “mainstream” theory. I don’t think Economics is a field as mature as Physics where you should have extremely strong deference to the orthodoxy based on an incredibly strong prediction record, but it’s worth keeping in mind.

Re: Show HN: A central bank simulator game with a realistic economic model

#129

442,329 by controlling interest to keep inflation as close to 1.5% as I could (which isn’t always easy). 442,306 by just immediately setting interest at -0.5% and leaving it there entire time. Inflation varied widely, but seemed to correct itself around 12% and -4% and spent a lot of time near 0%. Can anyone explain an economic theory why that happened, or is the game not reflective of reality?

Didn't Japan have negative interest rates?

A lot of places did in recent years

Re: Show HN: A central bank simulator game with a realistic economic model

#130
post #32

What is a good score tho, to get some idea of if you did OK or not? A few people mentioned 400-450k, is that average? Where's the dam leader board ;)

I haven’t seen higher than 443,385 on here or Reddit, which is my highest so far.
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