Utopia2: Money

Money, as it is used today, is a very bad concept. The government uses money to control the citizens. The citizens have a debt to the government that they cannot repay. This is a very bad thing. There is nothing stopping the government from printing vast amounts of money, thereby devaluing the currency. Now for the real shocker: the US government already does this, through a little mechanism called the Federal Reserve. The government prints money and sends it to the banks. But wait, the process doesn't end there. The banks get to make up money. Most banks have very low reserve rates. The banks might only have perhaps 10% of the money that they owe at any given time. They do this remarkable magic trick by loaning money. The fractional-reserve banking system means that they only need to keep, say, 10% of the money they "have" in their reserves. The rest they can loan out. When those loans get paid back, however, the money gets put into the reserves, which means that the bank gets to loan out even more money. For example, if a bank "borrows" $100,000 from the Fed, the bank only needs to keep $10,000 in their reserves. They can loan the rest out. When that $90,000 get paid back, the bank can then loan out $81,000 (90% of $90,000). This process repeats itself many times, meaning that the bank actually got to loan out several time the amount they originally "borrowed" from the Fed. This means that a simple loan from the Fed leads to far, far larger amounts of money in circulation. This leads directly to inflation.
Now for another shocker: money is worthless. All that backs the currency of today is government fiat. This means that all that stops the government from printing more money and devaluing the overall economy is the goodwill of the government. This means that we have two choices: printing more and more money and causing terrible inflation, or not doing that. The latter would seem more preferable, but one must realize that the public would then have a debt to the government that can never be repaid. So in the end, both choices are bad. Money, as it is used today, is bad.
The question then arises: how can we achieve a monetary system that actually retains the benefits of both sides without the detriments? The benefit of the government printing more and more money is that the government gets to use a lot of money. The benefit of not doing this is that inflation is curbed. One possible solution is the government deciding the prices of every single object on the market, and keeping those prices. One problem with this is that it would difficult to figure out the logistics. Another problem is competition on the international market. Both of these problems could be solved by uniting the world into a single, global state.