Friday, December 31, 2010

Anatomy of a Straw Man | The Threshing Floor

Practice dummies used for military training are supposed to represent the enemy, but are much easier to attack and defeat.  When it comes to arguing a theological position, Strawman argumentation is far too common place.  When arguing against a particular position, you should be able to state the opposing position in such a way that someone who holds to it would say in response to your summation of it “Yes, that is what I believe.”  However, far too often the one engaging in apologetics will rather confuse his own assessment of an opposing position for that position itself.

What do I mean?

Let’s take Calvinism as an example.  The stock objections to Calvinism (that it makes all men out to be puppets or robots, that it contradicts the love of God for every sinner, etc.) have been answered ad infinitum in many forums.  Yet, when the assessment comes from the opponent of Calvinism, it is based on a faulty understanding of the doctrines of grace.   Usually the critic’s arrows are aimed at Hypercalvinism and not Calvinism properly so called.  Be that as it may, the objections are continually re-asserted and usually without the benefit of addressing the proponent’s specific defense of what he holds to be revealed in Scripture.

So, here’s a little exercise for you.  When an opponent’s assertion is made, ask someone (if possible) who holds that position “Do you believe {fill in the blank}?  I think you’ll find the answers interesting.

What’s the anatomy of the Straw Man?  Let’s consider:

Bob holds position X.

Larry disregards certain key points of X and instead presents the superficially similar position Y.  Therefore Y is a distorted view of X and can be set up in several ways, including:

1.  Presenting a misrepresentation of the opponent’s position and then refuting it, thus giving the appearance that the opponent’s actual position has been refuted.

2.  Quoting an opponent’s words out of context–i.e. choosing quotations that misrepresent the opponent’s actual intentions

3.  Presenting someone who defends a position poorly as the defender, then refuting that person’s arguments–thus giving the appearance that every upholder of that position (and thus the position itself) has been defeated.

4.  Inventing a fictitious persona with actions or beliefs which are then criticized, implying that the person represents a group of whom the speaker is critical.

5.  Oversimplifying an opponent’s argument, then attacking this oversimplified version.

This sort of “reasoning” is fallacious, because attacking a distorted version of a position fails to constitute an attack on the actual position.

That’s why when I read apologetics, one of the first questions I ask before I dig too far into the argumentation is, “Does this person really understand the position he or she is attempting to refute?”  Look for the  summation statement of what the author is attempting to attack.  The answer will be very telling.  It will also save you a lot of time, as you would best be served by reading the critics who actually understand the “enemy”.

[reference Wikipedia under "Straw Man]

Posted via email from Anthony Martin's Weblog

Wednesday, December 15, 2010

Bitcoin Mining Cartels: A Total Non-Threat

The short SHORT version of the problem: Cartels are bad.

My short SHORT version of the solution: Fix bugs.  Focus on p2p.  Stay the course.  Ignore the cartels and they'll go away.

There is an interesting discussion on the Bitcoin forum about mining cartels. Some of the forum members are worried that a group of individuals might mount an attack on the Bitcoin network using a cartel style attack.

How is a cartel style attack potentially more of a problem than a non-cartel style attack?

Any cartel entity coordinates itself to represent a threat to the non-cartel entities.  It is comprised of people who want to subvert their target by allying themselves together to share resources and maintain "out of band" communication to that end.

In this case, the worry is that mining cartels will form to target the Bitcoin network.

How can this approach succeed against the Bitcoin network?  A cartel could generate blocks ahead of the network, holding out on announcing these new blocks until they get an advantage by manipulating these withheld blocks.  In other words, they can try to hoard new blocks while they monkey with them by creating cartelized blocks.

A cartelized block contains cartel approved transactions.  If you are being rewarded by the cartel, your transaction will be included in the block.  If you are being punished by the cartel, your transaction will be delayed or dropped completely.

I left out a lot of details in my explanation above.  If you want to know more, take a look at the original thread.

The reason I am skeptical that a mining cartel would ever represent a threat to the Bitcoin network is that in order for the cartel to succeed, it would have to run a very tight ship.

The folk in the thread I mentioned shows that there are all kinds of technical roadblocks to prevent this attack.  The most likely roadblocks typically implement more p2p solutions, not less.

In other words, add more p2p oriented features to Bitcoin so the cartel must cope with things like keeping timestamps in the proper sequence.

And I'm totally in favor of a greater p2p focus, beyond what is already implemented.  The more, the better.

Beyond that and fixing bugs, nothing formal should be done to deal with mining cartels.

Why?  Because they'll do what every other cartel has done in history.  They will self destruct on their own.  It may take some time, but down the line, I can tell, that every cartel in history either self destructs or gets violent.

An example cartel in history may have started off as a friendly pact among good business associates.  But once someone inside the cartel betrays his buddies, something has to give.

And the more p2p focus there is, the less likely violence will be possible in any meaningful way, so the mining cartel can only self destruct.  Maybe it can try to start over with a smaller, more trusted circle.  That's the only option for it: cartel fragmentation.  Fragmentation reduces the chance of a successful attack.

In historical examples, cartels get overtly violent or they join up with government so that the violence becomes legitimized by law.  Cartels benefit from the "captured regulator" effect when they join up with government so they can regulate away competition.  That's just not an option for a well focused p2p implementation.

So what if the cartel is able to maintain control of its members to keep them from breaking ranks?  Well, that's the ultimate boogie-man, isn't it?  It only takes one member to take it down.  But ok, let's say it happens.  Then what?

I'm not suggesting this would be a quick fix, but if the cartel has really done damage to the integrity of the network, then set up a new p2p currency and abandon Bitcoin, if it really is that bad off.  Call it Bytecoin or something.  Or Twobitcoin.  I liked the name Hashcash, but the name doesn't matter.  The cartels can have their own private currency all to themselves.  Either they keep spending CPU time on the old abandoned network they just took over or they start completely over with a brand new network.  Competition makes everything better.

And as Fred Brooks said, "Make one to throw away, you will anyway."

If you liked this post, send me a tip: 1PEVK4G27Lp8q8GnAbBiJqVQzCAK5hZGcB

Posted via email from Anthony Martin's Weblog

Saturday, December 11, 2010

Did You Give Up On Bitcoin?

One of the more compelling ideas of Bitcoin is that everyone has a chance to be the Ben Bernanke.  Meaning, everyone has a chance to "print money out of thin air."  The specification of Bitcoin is such that its money supply is "generated" by individuals who run the client on the network in "generate mode."  If you run it long enough, at least for now, you have a chance to produce 50 BTC (BTC is the currency code that stands for Bitcoin).

But if you were attracted to this idea, lately you may have noticed that it has been harder and harder to generate.  The simple fact is, the more people trying to produce, the less of a chance you'll have yourself.  On top of that, there are more people who resort to using their GPUs (graphics card) these days than ever before.  In a matter of months, the opportunity to generate Bitcoins seems to have dried up.

The good news is that there are new opportunities.  If you want to generate, I would like to recommend the Bluish Coder:

This is the group that picked the Bitcoin Remote Pooled Mining application to collect lower powered machines together so they can have a chance to generate.  If you have Windows or Linux (Mac OS X has limited support if you really dig), you can contribute your own CPU time to the mix and get a cut.  It's not 50 BTC, but it's something.

The amount you generate depends on the speed of your system, how long you participate, and how many other users are in the pool.  Yes, the amount is much smaller, but it's much better than nothing.

Of course, just like the carrot of 50 BTC, there's a chance your efforts will not pay off.  But you never know unless you try.  Since the time this pool was established, it generated 2 blocks, which means it distributed 100 BTC, so far, among all those who participated.  But the more people who participate, the smaller the winnings.

The advantage of pooling in this way is that none of the participants work against each other.  If you have two systems churning away on the official client, they are working against each one another by definition.  But in an alternative system like this, none of the systems in the pool do redundant work.

It is even possible to set up your own private pool with this kind of software, if that's what you want.  That way, if you have multiple computers, they would no longer work against each other.  But if you have only two computers to devote to Bitcoin generating, you may not see any results.

If you liked this post, send me a tip: 1PLoWWLHU27p1c66r9S3wkjRCNcL8AcY8D

Posted via email from Anthony Martin's Weblog

Tuesday, December 7, 2010

Bitcoin Declines After Rally to Record Prompts Investor Selling

Bitcoin declined after a rally to a record prompted some investors sell and as the strengthening dollar reduced the appeal of the crypto-currency as an alternative asset.

Recent price gains have led to profit-taking by some investors but it has probably not lead to an overall digital cash downtrend.  This is likely temporary profit-taking before the end of the year.  Bitcoin will continue to be favored through next year as a haven.

The dollar rose for a third day against most of its major counterparts on expectations an extension of tax cuts will bolster an economic recovery in the U.S. President Barack Obama agreed to extend Bush-era tax cuts for two years. A report tomorrow is forecast to show U.S. initial jobless claims declined.  Bitcoin typically moves inversely to the greenback.

Bitcoin has jumped 29 percent these last months after governments spent trillions of dollars and kept borrowing costs low to bolster economies hurt by the most severe global recession since World War II.

Posted via email from Anthony Martin's Weblog

Sunday, December 5, 2010

US Judge OKs confession extracted by threatening suspect with rape #09CARACAS442

Original story reported back in May by Reuters:

http://ca.reuters.com/article/domesticNews/idCATRE63R2DF20100506

Now it's being reported that this a perfectly valid form of:

http://www.rawstory.com/rs/2010/08/15yearold-gitmo-detainee-threatened/

"In one of the first military commissions held under the Obama administration, a US military judge has ruled that confessions obtained by threatening the subject with rape are admissible in court."

There's also a leaked cable that lists rape threats as one of the methods "Cuban Police" use to coerce CMPP applicants of something called a "US Embassy issued YY visa foil."

So this is yet another "do as I say, not as I do" situation.

Posted via email from Anthony Martin's Weblog

Saturday, December 4, 2010

State Dept. Busted on Support of Coup #09TEGUCIGALPA645

This one really bugs me for some reason.  It reminds me of the School House Rock spoof video "Pirates and Emperors."

First of all, I think it's interesting that Wikileaks is being lambasted for releasing these cables.  But I do have a question.  Is there a given cable that should have been kept a secret?  Taken as a whole, it's easy to be critical.  But if you look at them one-at-a-time, specifically which cable do Wikileak's critics claim should not have been released?  If you can find one, I'd be willing to evaluate it.  But all collectivists always love to generalize everything (that's a little dry humor, by the way, I realize I just generalized).  The point is, what is so critical to national security?  Please be specific.

I know it would take quite a while to look at them one-at-a-time.  And sometimes the problem isn't readily apparent on both sides.  So I'll agree that not all of these cables are smoking guns if the critics are willing to admit not all of them as a whole represent a breach of national security.

Taking them each carefully, there are some examples of U.S. "Hegemony" demonstrated in specific cables.  In the political game, you can't be against hegemony if you are nationalistic.  So that's simple, I'm not nationalistic.  Do I like the regimes that the U.S. government is monkeying with?  No, not really.  But not liking a regime doesn't mean I want to topple it using a relativistic approach.

I can be against elected national socialistic regimes without undermining them by using relativistic means.  I guess the democratic process is the best in the world until it isn't.  That seems to be the criteria the U.S. government uses.

U.S. "interests" trump everything, apparently.  Why would we support it?

The article below mentions an Oliver Stone documentary at the end called "South of the Border."  It's a bit dry.  It makes the point over and over that the U.S. foreign policy is being used all over South America.  The cable confirms this notion.  Internally, the U.S. has no issue secretly attempting to topple governments it doesn't like.  And while these South American governments are socialist regimes that are totally wrong, it doesn't mean anyone has to police them and "fix" them, at tax payers expense.

Believe me, I think people like Hugo Chavez and his ilk are a desease of South America masquerading as its own cure.  But U.S. involvement is like recommending cancer as a cure for AIDS.

All the U.S. does is make enemies for itself.  It spreads the IMF and the DEA which actually create more problems than they solve.  And this is the democracy that is so wonderful?  Really?

The Oliver Stone documentary also holds out the hope that the Obama Administration would correct the mistakes of past administrations.  It looks like this specific leaked cable proves nothing of the sort.  No administration is willing to leave its neighbors alone.  Yet supposedly the U.S. is hated for its freedom.  But we all suffer the consequences, giving ammunition for our neighbors hate us.

By July 24, 2009, the U.S. government was totally clear about the basic facts of what took place in Honduras on June 28, 2009. The U.S. embassy in Tegucigalpa sent a cable to Washington with subject: "Open and Shut: The Case of the Honduran Coup," asserting that "there is no doubt" that the events of June 28 "constituted an illegal and unconstitutional coup." The Embassy listed arguments being made by supporters of the coup to claim its legality, and dismissed them thus: "none... has any substantive validity under the Honduran constitution." The Honduran military clearly had no legal authority to remove President Zelaya from office or from Honduras, the Embassy said, and their action -- the Embassy described it as an "abduction" and "kidnapping" -- was clearly unconstitutional.

It is inconceivable that any top U.S. official responsible for U.S. policy in Honduras was not familiar with the contents of the July 24 cable, which summarized the assessment of the U.S. Embassy in Honduras on key facts that were politically disputed by supporters of the coup regime. The cable was addressed to Tom Shannon, then Assistant Secretary of State for Western Hemisphere Affairs; Harold Koh, the State Department's Legal Adviser; and Dan Restrepo, Senior Director for Western Hemisphere Affairs at the National Security Council. The cable was sent to the White House and to Secretary of State Clinton.

But despite the fact that the U.S. government was crystal clear on what had transpired, the U.S. did not immediately cut off all aid to Honduras except "democracy assistance," as required by U.S. law.

Instead, a month after this cable was sent, the State Department, in its public pronouncements, pretended that the events of June 28 -- in particular, "who did what to whom" and the constitutionality of these actions -- were murky and needed further study by State Department lawyers, despite the fact that the State Department's top lawyer, Harold Koh, knew exactly "who did what to whom" and that these actions were unconstitutional at least one month earlier. The State Department, to justify its delay in carrying out U.S. law, invented a legal distinction between a "coup" and a "military coup," claiming that the State Department's lawyers had to determine whether a "military coup" took place, because only that determination would meet the legal threshold for the aid cutoff.

QUESTION: And so - sorry, just a follow-up. If this is a coup - the State Department considers this a coup, what's the next step? And I mean, there is a legal framework on the U.S. laws dealing with countries that are under coup d'état? I mean, what's holding you guys [back from taking] other measures according [to] the law?

SENIOR STATE DEPARTMENT OFFICIAL ONE: I think what you're referring to, Mr. Davila, is whether or not this is - has been determined to be a military coup. And you're correct that there are provisions in our law that have to be applied if it is determined that this is a military coup. And frankly, our lawyers are looking at that exact question. And when we get the answer to that, you are right, there will be things that - if it is determined that this was a military coup, there will be things that will kick in.

As you know, on the ground, there's a lot of discussion about who did what to whom and what things were constitutional or not, which is why our lawyers are really looking at the event as we understand them in order to come out with the accurate determination.

 

But the July 24 cable shows that this was nonsense. The phrase "military coup" occurs nowhere in the document, a remarkable omission in a cable from the Embassy presenting the Embassy's analysis of the June 28 events, their constitutionality and legality one month after the fact, if that were a crucial distinction in assessing U.S. policy. And indeed, initial press reports on the statements of top U.S. officials in response to the coup made no such distinction, using the descriptions "coup" and "military coup" interchangeably.

Why did the State Department drag its feet, pretending that facts which it knew to be clear-cut were murky? Why didn't the State Department speak publicly after July 24 with the same moral clarity as the July 24 cable from the Embassy in Honduras? Had the State Department shared publicly the Embassy's clear assessment of the June 28 events after July 24, history might have turned out differently, because supporters of the coup in the United States -- including Republican Members of Congress and media talking heads -- continued to dispute basic facts about the coup which the US Embassy in Honduras had reported were not subject to reasonable dispute, and U.S. media reporting on the coup continued to describe these facts as subject to reasonable dispute, long after the Embassy had firmly declared that they were not.

As the Center for Economic and Policy Research noted in an August 2009 report, in the previous 12 months the U.S. had responded to other coups by cutting U.S. aid within days. In these cases -- in Africa -- there was no lengthy deliberation on whether a "coup" was a "military coup."

What was the difference?

A key difference was that Honduras is in Central America, "our backyard," so different rules applied. Top officials in Washington supported the political aims of the coup. They did not nominally support the means of the coup, as far as we know, but they supported its political end: the removal of the ability of President Zelaya and his supporters to pursue a meaningful reform project in Honduras. On the other hand, they were politically constrained not to support the coup openly, since they knew it to be illegal and unconstitutional. Thus, they pursued a "diplomatic compromise," which would "restore constitutional order" while achieving the coup's central political aim: removal of the ability of President Zelaya and his supporters to pursue a meaningful reform project in Honduras. The effect of their efforts at "diplomatic compromise" was to allow the coup to stand, a result that these supporters of the coup's political aims were evidently content with.

Why does this matter now?

First, the constitutional and political crisis in Honduras is ongoing, and the failure of the U.S. to take immediate, decisive action in response to the coup was a significant cause of the ongoing crisis. After nominally opposing the coup, and slowly and fitfully implementing partial sanctions against the coup regime in a way that did not convince the coup regime that the U.S. was serious, the U.S. moved to support elections under the coup regime which were not recognized by the rest of the hemisphere, and today the U.S. is lobbying for the government created by that disputed election to be readmitted to the Organization of American States, in opposition to most of the rest of the hemisphere, despite ongoing, major violations of human rights in Honduras, about which the U.S. is doing essentially nothing.

Second, the relationship of actual U.S. policy -- as opposed to rhetorical pronouncements -- to democracy in the region is very much a live issue from Haiti to Bolivia.

Yesterday there was an election in Haiti. This election was funded by the U.S., despite the fact that major parties were excluded from participation by the government's electoral council, a fact that Republican and Democratic Members of Congress, in addition to NGOs, complained about without result. The Washington Post reports that the election ended with "nearly all the major candidates calling for the results to be tossed out amid 'massive fraud.'": "12 of the 19 candidates on Sunday's ballot appeared together at a raucous afternoon news conference to accuse the government of President Rene Preval of trying to steal the election and install his chosen candidate, Jude Celestin."

Yesterday's election in Haiti had the fingerprints of the U.S. government all over it. It was funded by the U.S. "Security" for the election was purportedly provided by UN troops, paid for by the U.S. And the crucial historical context of the election was the 2004 coup that deposed democratically-elected President Jean Bertrand Aristide, a coup engineered by the U.S. with years of economic destruction clearly intended to topple the elected government.

Last week, Bolivian President Evo Morales called out the U.S. for its recent history of supporting coups in the region.

AP's treatment of President Morales' remarks was instructive:

Morales also alleged U.S. involvement in coup attempts or political upheaval in Venezuela in 2002, Honduras in 2009 and Ecuador in 2010.

"The empire of the United States won," in Honduras, Morales said, a reference to the allegations of former Honduran President Manuel Zelaya that the U.S. was behind his ouster.

"The people of the Americas in Venezuela, Bolivia and Ecuador, we won," Morales continued. "We are three to one with the United States. Let's see what the future brings."

U.S. officials have repeatedly denied involvement in all of those cases and critics of the United States have produced no clear evidence. [my emphasis]

It's certainly true that critics have produced "no clear evidence" of U.S. "involvement" in any of these cases -- if your standard for "clear evidence" of U.S. "involvement" is a US government document that dictated in advance everything that subsequently happened. But this would be like saying that critics have produced "no clear evidence" for the Armenian Genocide because researchers haven't yet found a Turkish Mein Kampf. [Some who dispute that there was an "Armenian Genocide" do actually claim something like this -- "there is no proof of a plan" -- but claims like this are generally not taken seriously by U.S. media -- except when the U.S. government is an author of the crime, and the crime is recent.]

 

In the case of the coup in Venezuela in 2002, we know the following:

- Groups in Venezuela that participated in the coup had been supported financially and politically by the U.S.

- The CIA had advance knowledge of the plans for a coup, and did nothing to warn the Venezuelan government; nor did the US do anything meaningful to try to stop the coup.

- Although the US knew in advance about the plans for a coup, when these events played out, the US tried to claim that there was no coup.

- The US pushed for international recognition of the coup government.

- The International Monetary Fund, which would not take such action without advance approval from the United States, announced its willingness to support the coup government a few hours after the coup took place.

These facts about U.S. government "involvement" in the coup in Venezuela are documented in Oliver Stone's recent movie, South of the Border. This is why it's so important for as many Americans as possible to see this movie: because there are basic facts about the relationship of actual U.S. government policies -- as opposed to rhetoric -- to democracy in Latin America that major U.S. media simply cannot be counted upon to report straight. In order to successfully agitate for meaningful reform of U.S. government policy in Latin America, Americans have to know what the actual policy of the U.S. government has been, something they are unlikely to learn from major U.S. media.

And this is why Just Foreign Policy is urging Americans to organize house parties on December 10 -- Human Rights Day -- to watch South of the Border. You can sign up to host a screening here.

Here is a clip from South of the Border, in which Scott Wilson, formerly foreign editor of the Washington Post, describes the "involvement" of the U.S. in the coup in Venezuela:

And here is a clip from South of the Border in which President Morales talks with Oliver Stone about the role of the media:

Oliver Stone: "Now [Morales] is joining the Hugo ranks, becoming more the 'bad left' in the American media."

President Morales: "The media will always try to criminalize the fight against neoliberalism, colonialism, and imperialism. It's almost normal. The worst enemy I have is the media."

 

South of the Border Clip #2 from Cinema Libre Studio on Vimeo.

 

Follow Robert Naiman on Twitter: www.twitter.com/naiman

 

Posted via email from Anthony Martin's Weblog

Thursday, December 2, 2010

Private Banking and Other Free Market Myths

It's time to have an adult conversation about private vs. public.  There is no private banking system, at least not on the large scale.  If we had a private banking system, it would be able to go under.  The ability to fail is one of the main criteria that makes something private.  Safety nets obscure this notion.  It blurs this distinction.  If the safety net is big enough and strong enough, it obliterates this distinction.

No organization that is shielded from failure is private.  It can't be.  Failure avoidance is the incentive that makes organizations efficient.

If you could eat ten cheesecakes with no risk, wouldn't you?  I mean no risk at all.  If the cheesecakes were free ... if you knew you wouldn't feel sick later in the short term ... if you knew you wouldn't gain weight in the long term ... if you knew you would have no chance of a coronary in the very long term ... what would stop you from eating ten cheesecakes every day?

Failure and risk are natural checks and balances.  It's the ultimate cost of doing business.

The same is true financially as with the cheesecakes.  There is no credible risk of a large bank going under.  Even if a bank looks like its at risk, it will be absorbed by another.  Assets will be transferred, liabilities will be wiped out.  The executives get their pay.  Their bonus will resume.  Did you know CEO bonuses are higher today than they've ever been, even in the middle of this recession?

 

I don't want to focus on the bonuses.  They are a drop in the bucket.  Focusing on executive bonus is just an indicator, similar to porkbarrel spending, which is also a drop in the bucket.  But if you want to know the health of an institution, take executive bonuses for banks and porkbarrel spending for legislators to extrapolate.  When they're out of whack, the institution is in trouble.

"Too Big To Fail" is just a cute euphemism for nationalization.  The banks have been nationalized long long ago.  You could say it happened in 1913 when the Federal Reserve was created.  It took a long time to devalue the currency to this point.  It's just like the frog in luke-warm water.  The frog has been in there a very long time.  It's a very tender frog.

In the real private industry, if you do a bad job, your profits are hit at some point.  You might be able to shield or cloak your losses for a while.  But eventually, reality sets in and you have to deal with the problem.  The more deception used to shield the loss, the more the losses pile up.  And if you can just call your "uncle" to make the losses just disappear, then guess what?  You are no longer in the private industry.  You've been nationalized.  It's that simple.

So what's wrong with nationalization?  Well, the failure guarantee is no longer implicit.  The failure guarantee becomes explicit.  Is there an implicit guarantee for banks anymore?  No.  It's completely explicit.  Therefore, they are a nationalized industry.  There's no need for speculating when nationalization will happen.  It's a done deal.  The implicit guarantee is an indicator that will lead to the explicit guarantee.

Has healthcare been nationalized?  Yes it has.  Is the doctor guaranteed to get paid?  Well, at the moment, the guarantee is just implicit.  If enough of them suffer devastating losses (high malpractice, financial ruin from non-payment, anything you can think of), they will become "Too Important To Fail" (or come up with some other cute euphemism).  So while doctors are still at risk of financial ruin at the moment because the relationship between doctor and government hasn't been completely hammered out in practice, there is no doubt in my mind, if a sudden crisis hits the medical field, government will pull out the safety net.  If the sudden crisis isn't forthcoming, it will be created.  "Never waste a disaster," as they say.

Is this all some big mistake?  Nope, it's by design.

Posted via email from Anthony Martin's Weblog