Massimo Morelli's Weblog
A personal weblog on technology, science, books etc..


Massimo Morelli's Weblog

domenica 29 settembre 2002

Learn something new about google

Brian Buck pointed out the page on Google for advanced operators.  Very cool.  Learn something new every day.  Trite but true.  [John Robb's Radio Weblog]

9:26:54 AM      comment []

venerdì 27 settembre 2002

I also found an interesting recent article by Barry Beohm on "Managing Software Productivity and Reuse" [pdf], that details the results of an extensive analys [read more]

In this study, they discovered that you could achieve an 8% improvement through "working harder", a 17% improvement through "working smarter", and a 47% improvement through "work avoidance".[Tony Bowden: Software Engineering]

10:10:12 PM      comment []

An essay about the usability impact of URLs (or should I say URI? I used to know the difference). It is very important to have friendly URL. The idea is far from new (I remember a very good article from Jon Udell, speaking maybe of Safari), but is very often overlooked. In the dotcom I worked for we had Vignette and I lost this fight.      via [Jinn of Quality and Risk]

In Edward Tufte's classic book The Visual Display of Quantitative Information, he coins the term chartjunk to refer to needless visual flourishes that contribute nothing to the effectiveness of an information design in communicating to its audience. These days, our URLs are loaded down with something very similar: long strings of characters that exist only to satisfy some technical constraint, detracting from the effectiveness of our URLs as communication tools. Call it CMSjunk.

[..] The advent of content management systems has been a boon in many ways, but the readability of URLs is not one of them. Databases don't give assets names; instead, they need formulas for retrieving those assets. CMS developers, figuring nobody reads URLs, simply embedded those formulas right there. Sometimes that would manifest itself as just an inscrutable number; at other times, the URL would include a whole string of parameters needed for the CMS to function.

10:02:30 PM      comment []

giovedì 26 settembre 2002

David Weinberger on Darwin Magazine. Why the Engineer is cynic (Dave would prefer skeptic).

So engineering cynicism comes out of, and is reflected in, the engineer's daily work experience.

Their optimism is reflected in their belief that everyone -- except, perhaps for some suits beyond redemption -- will respond positively to the straightforward truth. That's why engineers will stand up in a sales call and painstakingly go over the list of bugs, flaws, weaknesses and dropped features: They are being straight in an environment that only tells half the story. Despite what the horrified salesfolk think, the engineers are not trying to screw up the deal. They are trying to put it on an honest footing. That is their optimism surfacing: deal straightforwardly and not only will the deal go through, but it will be a stronger deal in the long term. And, except for when they forget to mention the strengths of their products, the engineers are, of course, right.

Cynicism among engineers isn't a character flaw. It is key to their strength.  (thanks Dave)

10:44:34 PM      comment []

The Economist: the economics of e-commerce.

Now that something approaching 100% of the Internet economy's first-movers have gone bust, this theory looks less plausible. Yet the logic once seemed persuasive. Where exactly did Internet economics go wrong? A new book by Stan Liebowitz, a professor of economics at the University of Texas at Dallas, and a long-time sceptic of the view that the Internet changes all the rules, gives the most thorough answer so far. Re-Thinking the Network Economy

[..] But the crux of the book is two chapters devoted to attacking the theory of lock-in. This was the notion that caused the biggest mistakesand the area where many economists were most at fault.

[..] Strong lock-in is different, because of the network aspect. Strong lock-in means that consumers won't move to a new and much better product unless a lot of others jump first. If they could somehow agree to move together, they would all be better off. But they cannot. Strong lock-in reflects a failure of co-ordination, it causes economic losses, and in theory it does create opportunities for decisive first-mover advantage. But how common is it, even in the new economy? Mr Liebowitz is forthright on this. Strong lock-in is not merely uncommon, he says, there is actually no known instance.


10:25:52 PM      comment []

mercoledì 25 settembre 2002

Me too.

I need a tabbed interface that lets me organize feeds the way I want.  I need keyword prioritization, I need the ability to delete all items from a specific feed at once.  I'd like them outlined to save screen real-estate.   [Curiouser and curiouser!]

9:56:08 AM      comment []

martedì 24 settembre 2002

Ozzie continue on the debate with Joel

I thought that I'd share with you a document, entitled "Software Platform Dynamics", that I've used in the past to help associates get up to speed with the nature of the software platform business. It's a fairly dense collection of thoughts gathered over many years; I hope that it serves to further the discussion... [Ray Ozzie's Weblog]

And into this essay lie the reason for .Net

"As a platform nears or achieves practical ubiquity, and thus as the end of geometric growth is within sight, the most effective use of new investment is not to continue to enhance that platform, but to instead invest in either 1) new "layered platforms", or 2) new disruptive "alternative platforms". It is key that as a platform achieves practical ubiquity, its profitability curve transforms from its own toward instead being a direct function of the market, and thus increased investment in the platform post-saturation is purely defensive: it only works to continue to ensure that it continues to follow that market's own growth rate."

5:51:34 PM      comment []

The ultimate magazine

An Unbiased News Source. The wildly popular Google internet search engine has added a new free service called Google News, which culls headlines from thousands of internet news sources for your reading (and self-informing) pleasure. []

What makes this service peculiar and extremely valuable is that its headline groupings are determined entirely by computer algorithms. As no human editors are there to contaminate with political bias, headlines from highly disparate perspectives often find themselves side-by-side.

8:59:08 AM      comment []

lunedì 23 settembre 2002

Fuel cells by 2004. Good write-up of MTI Micro Fuel Cells, a tech start-up that is promising to ship a commercial fuel cell for personal electronics by 2004. I so want this technology -- laptops that run for days, PDAs that run for months. Link Discuss (Thanks, Pat!) [Boing Boing Blog]

The prototype created by Acker's company, MTI Micro Fuel Cells Inc., relies on a minute flow of methanol to generate electricity. MTI Micro aims to shrink the prototype and begin selling its first commercial fuel cell product in 2004.

10:32:35 PM      comment []

Cluetrain, blog, microsoft as force of good. What an interesting mix in a single post!

Will Microsoft hop on the Cluetrain?. Duncan Wilcox ruminates on how blogs can help implement the communication strategies outlined in the Cluetrain manifesto: ... [Jon's Radio]

On Friday night after the InfoWorld conference, Tom Yager and I went to dinner with John Montgomery, a former BYTE colleague who's now a Microsoft group product manager deeply involved with the .NET platform. According to John, it is a daily requirement in his division that everyone -- himself included -- spend an hour a day helping customers, for example by answering questions on newsgroups.

Cool! But nobody seems to know this, which understandably frustrates John. Well, now there's an easy and direct way to handle these kinds of strategic communications. As Duncan indicates, a few more well-placed Microsoft blogs won't automatically humanize the company or guarantee trust, but it'd be a great way to start depolarizing the conversation.

10:28:25 PM      comment []

How to explain extreme programming without be boring

Extreme Programming / Extreme Mowing.  Neat article.  Recommended.  From The Perl Review.[The FuzzyBlog!]

10:06:11 PM      comment []

domenica 22 settembre 2002

XUL article on devX

Mozilla is a big product and there are many different technologies to explore. You can get a little done quickly with XUL as shown here, but XUL used systematically can produce a flexible and bulletproof application. XUL is a very fast GUI language, highly portable and the basis for a look-and-feel that is more application-centered than document-centered. XUL makes Mozilla-based browsers completely customizable.

10:30:16 PM      comment []

sabato 21 settembre 2002

Buzz Aldrin (the second man on the moon) punched a punk that approached him asking to swear on the Bible that the landing was not staged. Go Buzz, Go.

Buzz Aldrin

6:21:41 PM      comment []

venerdì 20 settembre 2002

LED torches an unexpected hit at Wal-Mart

[..] among Wal-Mart shoppers, the technology remains largely a mystery. "No one's spent a lot of money advertising the features and benefits," said Rayovac's Steel.

One sporting goods store manager suggested an explanation for that: "The bulb and battery people aren't exactly crazy about them."   [Wired] via [Jinn of Quality and Risk]

Rayovac Grip-Clip LED Light

11:08:46 PM      comment []

George W. is sure Iraq has WMD: he still has the receipts.

Business Week: In a previously unreleased letter obtained by BusinessWeek, the Centers for Disease Control & Prevention admitted that the CDC supplied Iraqi scientists with nearly two dozen viral and bacterial samples in the 1980s, including the plague, West Nile, and dengue fever. The letter, written in 1995 by then-CDC director David Satcher, was in response to a congressional inquiry.[John Robb's Radio Weblog]

5:48:53 PM      comment []

giovedì 19 settembre 2002

N1. I sniff vaporware.

But fear not. Help is at hand for anybody who fears that their office is about to be swamped by Playstation addicts. It comes in the form of N1, a new sort of über-operating system unveiled on September 19th by Sun Microsystems, a computer maker. N1 will make it much easier to run corporate data centresthus eliminating much of the work now done by armies of systems administrators.

N1's key concept is virtualisationcreating pools of resources such as computing power and storage capacity that can be used as needed. This is done by automating the work of systems administrators. Instead of having to load and configure software manually, they tell N1 to set up a computer system for themwhich, assuming it actually works, takes hours rather than weeks. What is more, N1 claims to be self-managing, meaning that it can, say, allocate additional computing resources to a website that faces a sudden surge in demand. Since this means that the many different computer systems in a data centre can easily be re-configured, N1 in effect turns them into one single big system.

11:20:08 PM      comment []

Storytelling, rich media, and web services. MSNBC's Forrest Sawyer kicked off InfoWorld's NextGen conference with a sweeping survey of evolutionary, cultural, and technological history in the manner of James Burke. Speaking as a communicator, not a technologist, Sawyer recounted the many ways in which technologists have missed the point: communication is not a problem to be solved, it's what makes us human, and the most essential human act is telling a story. ... [Jon's Radio]

2:43:00 PM      comment []

mercoledì 18 settembre 2002

I also did the site meter thing. Radio is a beautiful product, but has space to grow.

Radio RCS needs better referrer tracking. Radio wishlist: automated referers harvesting. Does anyone know of a simple way of automatically storing (or e-mailing) my list of referers every day just before they are reset, so I can look at them when I have the time? [Seb's Open Research]

» So many people want this I would hope that Userland would add it when the dust settles on Frontier 9.0.  I added a free site meter to my blog just to get better referrer tracking. [Curiouser and curiouser!]

10:17:28 AM      comment []

Is interesting this issue is discussed at all.

The PageRank lottery. Relevance Ranking Discriminates Against the Irrelevant!. via [Curiouser and curiouser!]

10:11:17 AM      comment []

martedì 17 settembre 2002

In his last newsletter, Bruce Schneier explains (well) the last vulnerability found in word

Microsoft Word 97 Vulnerability

Here's the vulnerability. Alice sends Bob a Word document. Bob edits it and sends it back. Unbeknownst to Bob, the document he sends back can contain any file on his computer. All Alice has to know is the file's pathname.

To make the vulnerability work, Alice embeds a particular code in the Word document she sends Alice. When Bob opens the document, Word scarfs up the file off his hard drive and embeds it into the Word document. Bob can't see this happening, and he has no way of knowing it has happened. If he looks at the document in Notepad, though, he can see the snooped file. Then, when Bob saves the document, the file becomes part of the saved document. He sends it back to Alice, and she has successfully stolen the file.

This attack works with any file on Bob's computer, and any file on another server that Bob currently has access to. It's not a macro, so turning off macros doesn't help. It's not a piece of malware that an antivirus program will catch. It's just a feature of Word 97 being used in a novel way. And Alice can embed hundreds of these codes into the Word document she sends Bob, so if she doesn't know the exact filename she can make lots of guesses.

This is an enormous security hole, and one that the user is simply unable to close. All Bob can do is 1) refuse to return Word 97 documents he edits, or 2) manually examine them all in Notepad or WordPad.

Another Microsoft what? There are hundreds of these a year. Why bother writing about it?

To me, the interesting aspect of this is that Microsoft is no longer supporting Word 97. This means the company has an interesting choice: they can patch the vulnerability, or they can demand that users upgrade to the latest version of Word. Doing the latter is sleazy, but it's in Microsoft's best interest for people to upgrade. They might think of this simply as added incentive.

We're seeing more and more of this: vulnerabilities in products that are no longer supported. When the SNMP vulnerabilities were published earlier this year, many products with the vulnerability were no longer supported. Some were made by companies no longer in business.

I first read about this vulnerability in an e-mail newsletter called "Woody's Office Watch." Alex Gantman reported the Word 97 vulnerability on Bugtraq, and Woody Leonhard claims that he has discovered similar vulnerabilities in Word 2000 and Word 2002. He's keeping them quiet for a while, giving Microsoft a chance to fix them.


12:25:53 AM      comment []

It is always useful to annotate what Jon Udell find fascinating.

Application- and service-oriented architecture in Zope 3. Over at Industrie Toulouse, Jeffrey P Shell meditates on an issue I've long been fascinated by: the interaction between an application-oriented architecture (e.g., Zope's HTML aspect) and a service-oriented architecture (e.g., Zope's XML-RPC aspect): ... [Jon's Radio]

12:09:33 AM      comment []

Airborne copulators break diaper tables on Virgin jets. Virgin is going to retrofit the diaper tables in its jet lavatories because people use them to have sex on and then break them. Link Discuss [Boing Boing Blog]

12:04:46 AM      comment []

sabato 14 settembre 2002

MSNBC on George W and Mr B.  The adjective does not fit the man.

SADDAM HUSSEIN has defied the United Nations 16 times. Not once, not twice, 16 times, he has defied the United Nations. Enough is enough, Bush said before meeting at the Camp David presidential retreat with Italian Prime Minister Silvio Berlusconi, who has presented himself as Bushs most loyal ally in continental Europe.

5:56:48 PM      comment []

The irony is that scores of consultants are trying to sell the concept that with an ERP tye company numbers will be certain.

JD Edwards filing causes stir. Wall Street skitters away from the company [an ERP vendor] after regulatory filings show that it beat earnings targets by improving bill collection, not selling more software. [CNET]

1:12:52 PM      comment []

12:48:50 PM      comment []

venerdì 13 settembre 2002

Chinese Google Update. An anonymous Chinese user wrote in to say that while Google is back, the cache search feature is not. This would validate the guess that the Chinese government was actually afraid of people using the cache to visit blocked websites.[Google Weblog]

10:42:44 PM      comment []

Good essay from Dan Bricklin about  small business blogging:

One type of small business is the "consultant". This covers a wide range of areas, from engineers, to marketers, to event planners, to freelance writers and designers, and more. Consultants are already very common users of blogs. A normal part of the job of many consultants entails going to meetings and conferences and being active in trade associations where they "network", show off their expertise, appear on panels, etc. A blog is a way of showing your expertise and establishing yourself as a trustworthy authority without doing the travel. The time necessary to maintain the blog comes out of the time that would have been spent at some of the meetings. (A blog is an excellent way to build up your "authority" to move up politically in a trade association, too. Your readers would be others in your field, not customers.)

10:32:14 PM      comment []

What do you want to swap today?

Porn company wants to buy Napster. A public net-porn company has offered to buy Napster for $2.4 million. Link Discuss [Boing Boing Blog]

10:02:01 PM      comment []

giovedì 12 settembre 2002

This prompt me to an Idea (for the technical savy people at Userland and Evectors): would be possible to make a tool to mirror Google as elgooG do, and put it in the hand of thousands of webloggers, for example as a radio macro? Imagine the headaches of the chinese censors!

New Scientist on Using elgooG to Bypass the Google Block. New Scientist: Google mirror beats Great Firewall of China. 'The mirror site, called elgooG, is a parody of the English language version of Google in which all the text on the web pages has been reversed. The text terms used for searches are also entered in reverse. The site, which returns all the same hits as Google, can be accessed from behind China's "great firewall".' I'm surprised it hasn't been blocked yet. If anyone knows another way to get to Google from China, please let me know. (Thanks, S. Anand)... [Google Weblog]

9:27:45 AM      comment []

mercoledì 11 settembre 2002

New vulnerability in IE
6:27:05 PM      comment []

martedì 10 settembre 2002

Salon. What George W. has learned so far...
3:39:25 PM      comment []

Ray Ozzie on centralization and decentralization:

Tyranny, Terror, and Technology.  Some thoughts about the intersection between the challenges confronting business, and those confronting government and society.

In the course of my work with our many customers in DC, earlier this year I had the honor of meeting John Arquilla - coincidentally only about a month after reading a book that he had edited with David Ronfeldt - Networks and Netwars: The Future of Terror, Crime, and Militancy. 

In listening to him speak eloquently and with conviction, and in reading his book, I found an incredible and unexpected parallel between our defense challenges and those that I'd been dealing with for years in commercial environments. Many of my enterprise customers' issues - those that led me to create Groove - seemed directly analogous to those confronting world governments in combating terrorists' organizational forms: The need to coordinate and organize for effective strategy, tactics, logistics, execution. The need to find the appropriate mix of organizational centralization and decentralization. The struggle to get off-the-shelf technology to work across organizational/security boundaries. The need to address leadership and doctrinal issues that arise when effective cross-boundary collaboration becomes mission-critical. Could the solutions also be analogous? [Ray Ozzie's Weblog]

3:23:25 PM      comment []

domenica 8 settembre 2002

From the economist.


10:34:04 PM      comment []

In an Interview on Intelligent Enterprise Nigel Pendse (and others) talk on the future of Business Intelligence.

IE: Are there other business drivers that you foresee as being engines of growth for BI companies in the next few years?

PENDSE: It's certainly not going to be BPM. Rather, the big one is going to be the much greater need for decent financial reporting, as the Enron, WorldCom, and numerous other scandals demonstrate. That's true right now in the U.S., and the trend is going to ricochet all around the world. Boards of directors have had an easy ride; now, they'll really have to take an interest in what their companies are doing no more saying, "Not our fault, we didn't know all the bad stuff our companies were doing" and they're going to need BI to do it.

5:29:02 PM      comment []

sabato 7 settembre 2002

Tony Bowden:

An expert may have lots more tools in his toolbox, but it takes a master to know exactly which one is best for every job.  [read more] [Tony Bowden: Software Engineering]

12:17:06 PM      comment []

venerdì 6 settembre 2002

Archive of answering machine greetings. "Hi. I am probably home, I'm just avoiding someone I don't like. Leave me a message, and if I don't call back, it's you." Link via [Boing Boing Blog]

11:45:54 PM      comment []

MS Exec: 'Our products just aren't engineered for security' [Slashdot]

6:23:52 PM      comment []

Terrific interwiew

Larry Wall On Perl, Religion, and... [Slashdot]

6:22:31 PM      comment []

On consulting:

'Is it indeed?' laughed Gildor. 'Elves seldom give unguarded advice, for advice is a dangerous gift, even from the wise to the wise, and all courses may run ill. But what would you? You have not told me all concerning yourself; and how then shall I choose better than you? But if you demand advice, I will for friendship's sake give it.

6:21:06 PM      comment []

I support:   [John Robb's Radio Weblog]
The symbol of the peace in the Land of RSS is this beautiful bouquet of flowers. Live long and prosper!


3:00:45 PM      comment []

When I was young and a developer (both missed now) I was in a similar project. The only differences were that we did not work at nights and sundays and that in Italy was then not possible to do layoffs. I worked for 3 years in a project that was ultimately thrown away, and the feeling was terrible. On the positive  side the project leader was not clever enough to escape the blame.

 Yourdon has conied a term for this kind of project: The Death March.

It was early June, the project was in trouble.... Those who can make you believe absurdities can make you commit atrocities. Voltaire
This is true in many different contexts.

It was early June, the project was in trouble. The project leads had previously cut down the resource plan, compressed the schedule, ignored testing, and forgotten about business processes. Most of the "team" (more than one hundred people) was unaware of this. But by Jove, these lowly engineers, graphic designers, and yes, even the project managers, would work day and night, 7 days a week, to complete the project by the promised date, in August. Thus, the "team" was told that all they needed to do was to work a little harder for two months and all would be swell. There was no pay for overtime, according to their employment contracts. But the company gladly paid for them to go to a bar and get collectively drunk once a month.

So, the client was told that the team would work a bit harder and longer hours, and all would be finished in the predicted time, despite having to add major pieces of design and code (an extra 50%), subcontractors, and business processes none of which had been planned for. They tried, and tried, and many burnt out. Some resigned. They didn't reach the absurd deadline, and the client was furious. The project leads held meetings and told the team they should just get on with it and be done as soon as possible, so they kept working, harder and harder, until they released an incomplete and buggy solution by the end of the year; they had even started system testing while key modules were crashing or incomplete. The client was not happy, the team was burnt out, and the company lost money.

Did anyone speak up and denounce the original absurdities? Yes. They were removed from the project, or told to keep quiet. What about the ones who didn't speak up, maybe because they believed in the lies the project leadership was feeding them, those who worked really hard? The company was losing money, and someone had to be laid off. On the other hand, the project leads repeatedly claimed the project was a major achievement, and got promotions. [Jinn of Quality and Risk]

2:58:35 PM      comment []

giovedì 5 settembre 2002

Ray Ozzie: the future of computing. He is pushing for Groove (of course)

[..] The Great Conversion to notebook computers is well under way, and it's now clear that the most wildly successful wireless mobile productivity device won't be the 3G phone, or even the BlackBerry, but the ubiquitous and inexpensive WiFi notebook.  In a shape and size to suit every need.

For a while, we were seduced into thinking that we should optimize costs by reducing the PC to being a dumb terminal, or by stopping the upgrade cycle, or by reverting to a simpler, generic OS.  But as we by necessity deal with more and more PCs in our lives, and as we use them in more and more locations, and as we've come to terms with the fact that we can't imagine doing our jobs without them in the course of our work with others, it has become clearer that the most critical thing to optimize is our time.  And in order to do that, we need more appropriate technology, not just simpler tech. via [Ray Ozzie's Weblog]

9:10:38 AM      comment []

mercoledì 4 settembre 2002

Cool. The reverse would also be cool.

Charles Nadeau has an NNTP to XML-RPC gateway in Perl. [Scripting News]


9:29:13 AM      comment []

Ray Ozzie respond to Joel's criticism on groove:

To Joel, on Platforms. [Ray Ozzie's Weblog]

8:59:58 AM      comment []

martedì 3 settembre 2002

Cool.  The BBC newsfeeds are out!   If you are running Radio, click here to subscribe (it uses the ubiquitous RSS 0.91 standard): Front Page Technology UK World via [John Robb's Radio Weblog]
5:23:23 PM      comment []

This is my new blogchalk:
Italy, Bologna, Quartiere Savena, Italian, English, Massimo, Male, 36-40, Books, Sport. :)
4:25:24 PM      comment []

Is strange that I stumbled into this news (from a pointer of John Robb to Jinn) just two days after finishing read "Into Thin Air". The book is very good, and distrurbing. And I agree with HBS that fierce competitivity could severely impair your judgement (Enron docet).

Lessons from a mountain disaster. What went wrong on Mount Everest on May 10, 1996? That day, twenty-three climbers reached the summit. Five climbers, however, did not survive the descent. Two of these, Rob Hall and Scott Fischer, were extremely skilled team leaders with much experience on Everest. ... [Many publications] have attempted to explain how events got so out of control that particular day. Several explanations compete: human error, weather, all the dangers inherent in human beings pitting themselves against the world's most forbidding peak. A single cause of the 1996 tragedy may never be known, says HBS professor Michael A. Roberto. But perhaps the events that day hold lessons, some of them for business managers. [Harvard Business School, Working Knowledge] via [Jinn of Quality and Risk]


9:59:18 AM      comment []

lunedì 2 settembre 2002

I already commented this in italian. I always wanted to translate but I am lazy. So now I piggyback Paolo...

How to open a weblog and get sued in less than one week Right now, today's most read weblog of the UserLand's Radio Community is my friend Simone's weblog. What happened is that opening his public blog last week he criticized an article printed on a local newspaper. He notified the author about his comments (the article was really filled with errors) and he got back first an insulting message, then a message threatening, actually promising, legal action. Simone published both messages on his site. The story got around, and today there's an article covering the news on one of the main technology news sites in Italy. [Paolo Valdemarin: Paolo's Weblog]

3:11:14 PM      comment []

Joel Spolsky vs Groove. Sam has a point too...

Practice what you preach. It looks like Joel is trying to do his part to commoditize his product's complements. [Sam Ruby]

Update: if you want to follow the argument, maybe Jeroen Bekkers' Groove Weblog has a better Point of view.

9:37:29 AM      comment []

domenica 1 settembre 2002

I might add (from the precious point of view of a "Civilian" )  that LWP is immensely powerful but much less simple that it seems, so a tutorial is very important.

Perl and LWP Tutorial. If you do any Perl programming and haven't yet learned how to use the very wonderful LWP module then you'll appreciate this: via [The FuzzyBlog!]

9:06:20 PM      comment []

This guy has an interesting weblog. At least one good idea, and a dogma. (it's not so common isn't it?)

8:52:11 PM      comment []

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