I don’t think you’re talking about the retirement system of Sweden at all, actually. Sweden uses a virtual account system called “notional defined contributions.” In an NDC system, everyone pays a fixed rate into the pension system. The contribution rate is considered to be “permanently fixed.” As your working life progresses, a larger and larger amount of “credit” builds up in your notional account that you’ve put money into throughout your working life.
When you retire, the total value of your notional account is annuitized using standard actuarial / annuity principles. There is no guaranteed benefit amount, instead your benefit is based on the value in your notional account as it is annuitized when you retire. If life expectancy is dramatically higher for persons aged 65 when you retire than it is now, then the annuity value of your notional account would be lower.
If population is declining, contributions to the notional accounts declines as well. This system incentivizes people to work, as there is no special benefit to retiring and you continue to improve your retirement payout the longer you work.
This system, once implemented, basically makes it impossible to reach a scenario where the massive old person population consumes a huge portion of the working-age population’s resources. Since the benefit is not defined, it will adjust with society, as it should be.
What you seem to be talking about is a 401k type system in which people make investment choices to participate in various funds. There may be some government-sponsored plan like that in Sweden in addition to what I just mentioned, but the primary pension system in Sweden is the NDC system I just described.
I think 401ks have problems for the average investor, which is why they haven’t worked out nearly as well as they were supposed to have. The 401k as a vehicle has offered too many options and choices, and needs reformed. I’d make some level of 401k contribution mandatory along with making employer matches mandatory. I’d also institute a rule that you cannot make any pre-retirement withdrawals from your 401k. Further, I’d create regulations on the type of funds 401ks could have (basically stock index, bond index, money market) and I would require someone to be a “qualified investor” to have access to more active trading models and even additional investment options. (Becoming a qualified investor would mandate a certain level of net worth or income, and passing some form of competency exam.) Regular investors would only have access to a limited number of index style funds and would be limited to one rebalancing of plan assets per year (eliminating any ability to market-time.)
People keep saying this, but the evidence just isn’t clear at all. I can point to many scenarios where stimulus efforts have resulted in mild, mediocre , or even negative results in terms of GDP growth. The only response the Keynesians ever have is that “you weren’t spending enough.” It’s hard to believe this could be true during the worst parts of the Great Depression when Roosevelt was engaging in massive amounts of spending.
Of course, we’ll know when a debt crisis happens, but the point is to respond before it gets to that point. This concept of “needing spending” and “not needing spending” is simply asinine. A society has to decide what actions it wants to take, what services it wishes to provide and etc. Based on those decisions you have to decide to spend or not. The idea that sometimes the economy “needs” spending is fallacious. Markets will always correct over time without active stimulus.