No matter how you slice it, there must be a central authority to indicate which are real, and which are false.
So glad someone finally said this in this thread. Though, I'm not glad for the same reasons you wrote this.
A hack there can cause all flavors of theft, fraud, and forgery.
Everything can be hacked.
To suggest that bitcoin cannot be broken on some level is the same thing everyone has heard every day of the week regarding every computer related thing ever. I'm not sure history and empirical evidence bodes well for this point, though I am certainly no expert in anything.
In 2008, credit broke the value of everyone's money and it is not even a part of the money supply.
If you have no central authority, then you risk fracturing your money supply at the exchange level, with each exchange becoming its own authority."
What does "fracturing your money supply at the exchange level" mean, and how is this different from the current currency system?
The rest of this comment seems to suggest that every exchange in the modern day in most countries I'd like to live in already isn't its own authority. One has the option of using a government backed currency, or some other form of currency such as cigarettes. How does bitcoin improve this situation?
Having come up with a decentralized P2P solution to this problem is the reason people are so excited about this Bitcoin thing. ;)
It is theoretically debatable as to whether or not a centralized or decentralized money supply system is better. I posit that centralized is better, as we can vote for the people and computer systems used to manage the process, as well as maintain better systems of checks, balances, accountability, and transparency for those that are specialized in the knowledge base to manage these processes. I posit that the "community" or "open source" based system will not respond quickly enough when there are shocks to the system, and volatility will be less controllable. When shit hits the fan with the value of the bitcoin money supply, I posit that most in the "community" would rather not address the problem as it is not their job to do so. There has already been serious volatility to the value of the bitcoin due to some pretty minor scares. Currency only has value that its constituents put faith in, and if suddenly someone (everyone) loses faith in bitcoin what happens? Either way monetary supply must be governed in accordance to fiscal policy, as the two have dramatic effects on each other.
What supporters of Bitcoin continuously forget is that we do not have problems with currency: we have problems with the laws that govern currency.
To suggest that Bitcoin is the answer for currency is false as there will always be many types of currency. Like a debate about religion or communism vs capitalism, there is no perfect currency, there is a set of currencies we will continuously use in conjunction with each other.
That being said, when there is finally one world government I can put my faith and vote in (probably won't happen within my lifetime) I can support having one major world currency. This currency might contain elements of bitcoin theory and technology, but I would not put money on bitcoin technology being The Answer in this case either.
Mathematics may be the answer to the universe, but I don't know if bitcoin is.