Most assets were lower this week, with the major exceptions being Bitcoin, the free market online currency, and Cotton.
Bitcoin ended the week up 8% at 917 mg, after recording another all-time high of 938 mg on Monday. Things got exciting the next day, as high transaction volumes caused two different versions of the Bitcoin mining software to update the distributed ledger (known as the "block chain") differently. This split, or "fork in the block chain", was deftly handled by the developer group, but it caused a dip in the price which has now been mostly erased. If you are interested in more technical details, you read about them here. This should serve as a reminder that Bitcoin is a young currency, and still vulnerable to failures of technical, social, or political origin. Keep position sizes small enough that you won't be badly hurt if one them turns out to be fatal, but keep in mind that there is still tremendous upside if this experiment in free market money succeeds.
This chart doesn't try to show all the debts of the United States, just the publicly acknowledged debt of the federal government. So it doesn't include state and local debt, and it also omits unfunded liabilities (promises to pay in the future for things like medicare and social security). This is the number that grows each year by the size of that year's deficit.