Showing posts with label math. Show all posts
Showing posts with label math. Show all posts

Wednesday, June 30, 2010

Debt Without End?

The most recent report on the federal debt outlook from the Congressional Budget Office doesn't paint a pretty picture. From the CBO's blog (who knew?):

Recently, the federal government has been recording the largest budget deficits, as a share of the economy, since the end of World War II. As a result of those deficits, the amount of federal debt held by the public has surged. At the end of 2008, that debt equaled 40 percent of the nation’s annual economic output (as measured by gross domestic product, or GDP), a little above the 40-year average of 36 percent. Since then, large budget deficits have caused debt held by the public to shoot upward; CBO projects that federal debt will reach 62 percent of GDP by the end of this year—the highest percentage since shortly after World War II.

But that's only the start. The Economist has some analysis on likely scenarios and publishes this chart:


The CBO blog has an explanation for the shape of these curves:

The budget outlook is much bleaker under the alternative fiscal scenario, which incorporates several changes to current law that are widely expected to occur or that would modify some provisions of law that might be difficult to sustain for a long period. In this scenario, CBO assumed that Medicare’s payment rates for physicians would gradually increase (which would not happen under current law) and that several policies enacted in the recent health care legislation that would restrain growth in health care spending would not continue in effect after 2020.
Note how the increase in spending in the long term is due to medical spending by the federal government. This is the reason that Obamacare is so pernicious. For all the reasons that we have detailed previously (straitjacket on free enterprise, reduced competition, increased demand due to subsidies) spending on health care by the federal government will inevitably increase.

Further, there are other reasons to be believe that tax revenues will be flat in the long run, as shown in the chart above, regardless of tax law changes. I have previously commented on Hauser's law, which is an empirical observation that federal tax receipts will never rise above 20%. Recently found the graph that shows this:



The math of our situation is unavoidable. Under the current tax system, we will not raise significantly more revenue, but the cost of government will inevitably rise. To answer the title question, of course this debt will end, because it is unsustainable. If the Greeks can figure this out, so can we, the sooner, the better.

Monday, February 9, 2009

Can Anyone Do Math Anymore?

Today's pretty diagram is brought to you courtesy of your local municipal government here in Enron-by-the-Bay and the regional government. According to the local fishwrap:

Houston-based Jacobs Consultancy, which so far has earned $3.2 million to analyze Lindbergh Field for the Sanders group, said many of the improvements could be funded through landing fees and other airport revenues.

Being in the airport consulting business seems like a great racket. The work is steady, no one really looks hard at you produce, then they just do it again next year.

OK, so how much would this lovely plan cost? It turns out that they quote a cost of a mere $5 to $12 billion. However, in my experience, whenever you have a quote like this, you take the high estimate and triple it and now you're getting close. But hey, there's lots of tourists passing under Charles Lindbergh's visage to pay for this right? Sure are. Turns out, the port authority is estimating that upwards of 20 million passengers per year will be using our airport over the next twenty years.

Now class, it's time to do some math. Don't worry, Professor B-Daddy will step you through the lesson. First, we'll be a little generous and say the project comes in at only $25 billion. How long before we demand the next airport upgrade? Twenty years? OK. How many passengers will we get? 20 x 25 million = 500 million. Wow, that's a lot of passengers. But our bill is $25 billion. $25 billion/500 million passengers = $50 per passenger. That's right, this little ol' improvement will cost an average of $50 per ticket. Southwest Airlines has some fares for less than that. That doesn't even count the interest on the bonds that would have to be issued, which only makes the math worse.

The article talks about landing fees and getting someone else to pay for this, but the bottom line is that no matter who pays, that's mighty expensive and the taxpayer money could be put to better use.