Steps to Resolve:

1.  Open the .xml file which is automatically created while creating a new project eg: “myproject-app.xml” – usually will be in the name of yourproject (here myproject is the name your project).

2.  Change the first line of the file from

<application xmlns=”http://ns.adobe.com/air/application/1.1″>

to

<application xmlns=”http://ns.adobe.com/air/application/1.5″>

3.  Clean the project, compile and export again.

4.  If the problem still persists reinstall the Adobe Air installed in your system and execute the step 3.

It was on june 3 rd of 2009, the Redmond Giant officially announced their new Seach Engine “bing” as a replacement of their former Search Engine “Live” which was pretty struggling for the search engine  “Market  Share” with Google and yahoo but went despair.  Bing is definitely a competitor for Google but not a google killer. probably you can find a plenty of websites and vendors that has started  comparing Google and “bing” search results..but results shows that both Google and bing has got different way of indexing the results. Though Google has already won the battle before it starts, but some testing vendor results shows that bing search results are extremely good on some queries like Air Fare, Health and Local  informations….

Note: bing search is based on semantic technology( Natural Language Procesing) from Powerset which Microsoft purchased in 2008. Bing also includes the ability to Save & Share search histories via Windows Live SkyDrive, Facebook  and e-mail.

Following Links provides a bird’s-eye view comparison between bing, Google and Yahoo.

http://www.pcworld.com/article/165749/bing_vs_google_vs_yahoo_feature_smackdown.html

http://www.techcrunch.com/2009/06/02/search-smackdown-bing-vs-google/

http://www.bingandgoogle.com/ – A site that compares the bing and Google serch results in two panels

Below I post 10 top changes between Flex 3 and Flex 4 framework. This article was originaly posted on the infoQ.com If you want to download Flash Builder 4 or Flash Catalyst beta release read this post.

This week, Adobe released their first official beta of Flex 4, codenamed Gumbo. The release includes a number of major changes. This list gives a high level overview of the items that have changed in the latest version of the popular RIA framework.

1. Integration with Adobe Catalyst

The primary focus of the Flex 4 development effort is providing support and integration with Adobe Catalyst – Adobe’s new designer tool for creating rich Internet application assets without writing code. Catalyst promises to change the way that developers and designers are able to collaborate in their efforts, as it recognizes that application developers and designers work differently. Thus, it allows each to concentrate on what they are good at, as it enables each to work in the traditional ways they are accustomed to. The majority of the changes on this list have been made in order to facilitate integration between Flex and Catalyst.

2. Spark Component Architecture

Each version of Flex includes a full component library with all of the common items needed to build an application, including data grids, buttons, layout containers, etc. In Flex 4, the underlying architecture of the components is known as Spark, where it was known as Halo in Flex 3. A major part of the effort to support Catalyst is in revamping the component model to adhere to a much higher level of separation of concerns.

In the new Spark component model, core logic, skinning, and layout have been broken out so that they are handled independently of one another. The Spark component model is built on top of the Halo component model. Basically, that means that it extends from Halo’s core base class UIComponent, allowing Flex4 to be adopted incrementally and Flex 3 components to be used in Flex 4 applications.

In addition to the other changes, effects have been updated in Flex 4. Effects can now animate arbitrary objects and types, allowing for much greater flexibility in their use. Flex 4 effects have been implemented in the new “spark.effects” package. Just like the new component library, the Flex 4 effects have been re-implemented, leaving the Flex 3 effects in place for backwards compatibility.

3. MXML 2009

MXML is an XML-based abstraction, built on top of ActionScript 3 – the Flash Player programming language. MXML is used for laying out the view portions of the user interface and supporting tooling, such as the IDE, and now Catalyst. MXML 2009 includes a number of updates to support the decoupling of different behaviors (core, skinning, and layout) and the new component library. The Flex 4 components have been implemented in their own package (spark.components), leaving the Flex 3 components in place. MXML 2009 includes a new namespace to support this.

The following example of an application declaration shows using the namespace and defining both the Spark and Halo component namespace:

<s:Application 
  xmlns:fx="http://ns.adobe.com/mxml/2009" 
  xmlns:s="library://ns.adobe.com/flex/spark" 
  xmlns:mx="library://ns.adobe.com/flex/halo">

Thus, one can use a Flex 4 Button by doing the following:

<s:Button label="My Flex 4 Button" />

And, the following for a Flex 3 Button:

<mx:Button label="My Flex 3 Button" />

4. Improvements to View States

Flex 2 introduced the notion of states to the Flex framework, where changes to a view component can be managed through a simple state change. In Flex 4, view states have been revamped to simplify the syntax and make them easier to use. An example of the simplified syntaxes are the new language attributes includeIn and excludeFrom, which can be set on a component to direct them how to behave on a state change (See below).

<!-- Given the states A,B,C -->
<m:states>
  <m:State name="A"/>
  <m:State name="B"/>
  <m:State name="C"/>
</m:states> 

<!-- This button will appear in only states A and B -->
<Button label="Click Me" includeIn="A, B"/> 

<!-- This button will appear in states A and B -->
<Button label="Button C" excludeFrom="C"/>

5. FXG Support

At its core, the Flash Player is a drawing engine. Adobe has leveraged this with the introduction of FXG in Flash Player version 10, and now its introduction to Flex. FXG is a declarative graphics format, which enables portability of assets between tools. That means that designers will be able to create assets in Catalyst or CS4 Illustrator, and the Flex application developer will be able to import them and use them without having to modify them.

6. Skinning Enhancements

The biggest change in the Spark component model was overhauling skins so that they now control all visual aspects of the components and encapsulate their logic outside of the components core. Thus, this allows the visual parts of a component to be modified independently of the underlying core logic.

Let’s look at the PanelSkin.mxml skin file, the default skin for the Panel container, for an example:

<?xml version="1.0" encoding="utf-8"?> 

<s:SparkSkin xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" alpha.disabled="0.5"> 

   <fx:Metadata>
   <![CDATA[ 
    /** 
     * @copy spark.skins.default.ApplicationSkin#hostComponent 
     */ 
    [HostComponent("spark.components.Panel")] 
    ]]>
   </fx:Metadata> 

   <fx:Script>
     /* Define the skin elements that should not be colorized.
      For panel, border and title backround are skinned, but the content area and title text are not. */
      static private const exclusions:Array = ["background", "titleField", "contentGroup"]; 

     /**
      * @copy spark.skins.SparkSkin#colorizeExclusions
      */
     override public function get colorizeExclusions():Array {return exclusions;} 

     /* Define the content fill items that should be colored by the "contentBackgroundColor" style. */
     static private const contentFill:Array = ["bgFill"]; 

     /**
      * @inheritDoc
      */
     override public function get contentItems():Array {return contentFill};
   </fx:Script> 

   <s:states>
     <s:State name="normal" />
     <s:State name="disabled" />
   </s:states> 

    . . . . . 

   <s:Rect left="1" right="1" top="31" height="1">
    <s:fill>
     <s:SolidColor color="0xC0C0C0" />
    </s:fill>
   </s:Rect> 

   <!-- layer 5: text -->
   <!-- Defines the appearance of the PanelSkin class's title bar. -->
   <s:SimpleText id="titleField" lineBreak="explicit" 
      left="10" right="4" top="2" height="30" 
      verticalAlign="middle" fontWeight="bold">
   </s:SimpleText> 

   <s:Group id="contentGroup" left="1" right="1" top="32" bottom="1">
   </s:Group> 

</s:SparkSkin>

Since the only job of this skin file is to control the visual appearance of the Panel container, it makes it possible for a designer to modify how the component appears without ever editing the component source code or understanding the internal behavior of the component. More importantly, it allows designers to use Catalyst in a way that is natural to them.

7. Updated Layout Model

Those familiar with Flex development will notice that the majority of the containers used in the Flex 3 developer are not a part of the Gumbo component library. This is because layout has been decoupled and is now handled through delegation. Since most of the Flex 3 containers existed simply to provide different forms of layout (e.g. HBox for horizontal layout, VBox for vertical layout), they are no longer needed.

The following example shows one way that a Flex developer can now define layout. This example uses the Group class to manage the buttons, which is a new Spark class for management content items. The result is the two buttons displayed side-by-side, like it would have with an HBox in Flex 3.

<s:Group width="400" height="400">
  <s:layout>
   <s:HorizontalLayout paddingLeft="5" paddingTop="5" />
  </s:layout> 

  <s:Button label="Button 1" />
  <s:Button label="Button 2" />
</s:Group>

8. Flash Builder 4

Flash Builder 4, formerly known as Flex Builder, is the latest version of the Eclipse based IDE for application developers. The new version comes with a handful of updates including: conditional debug break points, more refactoring tools, and FlexUnit 4 support. As always, it includes MXML, ActionScript 3, CSS editors, a visual designer, and the Flex performance and memory profiler (profiler only in the Professional version).

In addition, the latest version includes advanced data management features to simplify the development of data-centric applications. This includes client side data management features that handle CRUD operations and scrolling through large collections on your services.

9. Compiler Performance

A major pain point most everyone developing Flex 3 applications has encountered is poor compiler performance. Thus, one of the published goals for Gumbo was to improve compiler performance in Flex 4. At this point, there are not any official benchmarks published from this work. However, Adobe’s Peter Donovan did publish some notes on his early efforts, stating that he believed a 25% improvement would be reached without significant restructuring. He also said that to achieve a 3-4 times improvement, a redesign will be required. Certainly everyone developing enterprise Flex applications hopes that this is addressed by the time Flex 4 ships at the end of 2009.

See Peter Donovan’s notes for more information.

10. New Text Capabilities

A major knock on Flash based applications (both Flex and non-Flex based) has been the ability to effectively deal with text. In Flash Player 10, Adobe introduced a new text engine to support the demands of rich Internet applications (multi-lingual, print, keyboard short-cuts, etc). Gumbo includes a handful of new text classes (RichText, SimpleText, etc) for more robust text support within the Flex framework. In addition, Adobe is working on their new Text Layout Framework to give all ActionScript 3 developers the ability to harness the power of the Flash Player’s text engine. Learn more about the Text Layout Framework at: http://labs.adobe.com/technologies/textlayout/

As you can see with the wide range of changes, Flex 4 represents another step forward for the popular RIA platform. For additional information on the Flex 4 SDK changes, see Matt Chotin’s article, What’s new in Flex 4 SDK beta.

Author’s Bio

Jon Rose is an enterprise software consultant and Flex Practice Director at Gorilla Logic, Inc. located in Boulder, Colorado. He is an editor and contributor to InfoQ.com, an enterprise software community. He is the co-host of DrunkOnSoftware.com, a videocast for those who like booze and bits. He has worked with clients large and small in both the private sector and government. His love of solving problems drives him to build quality software. You can read his blog at: http://ectropic.com.

First Let me Explain the Steps for Firefox:

1. Open a new Tab and type “about:cache” in the URL address bar.

To check out the broswer cache in Firefox

2. Check the image on the Left – probably you will come across like this.

Steps for Internet Explorer(IE7):

1.  Select the Internet Option command from the Tool Menu.

2.  General Tab -> Select the Setting button under the Browsing history.

3.  Select the ViewFiles button which opens the folder containing all the browser Cache Files.  That’s all Simple.

Flex Visual component are created with the class hierarchy of several ActionScript class to provide more flexibility and add more features at the different level of hierarchy.

Following is a visual representation of class hierarchy of Flex Visual Components:

Object: Object is a Top/Root Level class of AactionScript class hierarchy. | More Info…

EventDispatcher: EventDispatcher class extends object class. EvenDispacher class allows any object on the display list to be an event target. | More Info…

DisplayObject: Display Object class extends object and this is the base class for all objects which can be added in the DisplayList. Display object class allows some properties (x, y, width, height )for components/Objects like MovieClip, Button, TextField etc… | More Info…

InteractiveObject: InteractiveObject extends DisplayObject and it is an abstract base class for all DisplayObject with which user can interact. InteractiveObject provides some common properties like doubleClickEnabled, focusRect, tabIndex etc… and Events like all mouse Events, Keyboard Events. | More Info…

DisplayObjectContainer: DisplayObjectContainer extends InteractiveObject class and it is a base shell for all containers which adds display objects in the container shell. . DisplayObjectContainer provides some common properties like… numChildren, tabChildren etc… and methods like addChild(), removeChilld() method related to the child display object management. .. | More Info…

FlexSprite: FlexSprite is a subclass of the Player’s Sprite class and the superclass of UIComponent. It overrides the toString() method to return a string indicating the location of the object within the hierarchy of DisplayObjects in the application. The Sprite class is a basic display list building block: a display list node that can display graphics and can also contain children. | More Info…
UIComponent: UIComponent extends Sprite and it is a base class for all Interactive and non Interactive component. The UIComponent class is not used as an MXML tag, but is used as a base class for other classes. | More Info…

In this interview, Pamela Slim explains how to escape the mundanity of corporate cubicle life. Pam is a business coach and writer who helps frustrated employees do just that. Her blog, Escape from Cubicle Nation, is one of the top career and marketing blogs.  Her expertise in personal and business change was developed through many years consulting inside corporations such as Cisco Systems, Hewlett-Packard, and Charles Schwab. Her new book is Escape from Cubicle Nation: From Corporate Prisoner to Thriving Entrepreneur.

1. Question: How do you know when it is time to quit your day job?Answer: There is no perfect formula to ensure that you are 100% ready to quit your job and start a business—if I could figure it out, I would be rich!  But there are a few critical things you need to take into consideration in making the decision.  First, you have to have a really clear, realistic picture of your financial life and understand the specific risks you are willing to take.  For some people, this is a defined pile of cash to burn through, for others it is a period of time you set aside to see if your business will work.  Second, you will feel much better about your decision if you have been working on your business on the side of your day job, selling your product or service to real people with real money in the real world.  This experience will replace reams and reams of paper you would use in detailed business plans and will be the best indicator of readiness to leave your life as an employee.
2. Question: But isn’t it crazy to start a business in this economy?Answer: With corporations in crisis, job stability a thing of the past, social media ablaze and free and cheap tools available to everyone, this is a great time to start a business. Depending on your financial situation and how far along you are with your business idea, if you find a need in the market that you can serve well, this is an excellent time to run ahead of the pack.  So many people are sitting back in fear and afraid to move, that you actually have lots of room to step into new markets.  Let me phrase it another way.  In the unfortunate case that you get laid off, do you think you would be more happy having started a business on the side or having spent your energy desperately clinging to your job?
3. Question: How do you decide which business to start?Answer: Business ideas are a dime a dozen.  From my perspective, which is firmly rooted in the idea that the purpose of a business is to allow you to live the kind of life that makes you happy, healthy, wise, and wealthy—or at least well-fed, a good business idea has four components.  First, it is rooted in something you are passionate about and which energizes you.  Entrepreneurship is too darn hard to manufacture enthusiasm.  Second, you have the skill and competence to make it happen—or at least a really great contact list of smart and enthusiastic friends to help you figure it out.  Third, you need to do enough business planning to know whom you are trying to serve, and how you are going to make money. Finally, you want a business model that you have the resources to support and that delivers the life you want to live.
4. Question: What is the very first step that I should take?Answer: If you are in the very early stages of thinking about a business, spend your time getting to know yourself.  One of the best things I learned from author Jim Collins is to study yourself as if you were a scientist observing a bug. Pay very close attention to the things that either make you feel great or feel crappy.  Note the kind of environment, work, people, topics, industries, schedule, and activities that make you thrive.  When you start your business with this awareness, you will feel natural energy and clarity which will make all the next steps of the process like choosing a business idea, figuring out the money, planning your business, identifying your customers, and creating a marketing process a lot easier.
5. Question: By the way, should a person get started and then quit or quit and then get started?Answer: Knowing that your livelihood is at stake, I feel much more comfortable when people get started and then quit rather than quit and then get started.  The process of creating your first product or service and getting paying customers is often much different than you imagine and can require more time, resources, and support than anticipated in your planning stage.  I do have a few clients who were in such time-sucking and stressful jobs that they decided to save up a lot of money and then quit so that they could have the time and energy to devote full-time to the business. Also, there is nothing more motivating for getting new business than an impending mortgage payment. Whichever path you choose, make sure you know how much time or money you have to burn and have a few options open for generating income if your business takes longer to get off the ground than anticipated.
6. Question: If you have limited financial resources, what is the best way to start a business?Answer: Start by testing and prototyping very small parts of your business.  You don’t have to set up a huge infrastructure or print shiny brochures or to buy new equipment.  Be ruthless about getting as much information and coaching as you can for free. People are very generous with good content, and you can learn tons by reading smart blogs and attending free teleclasses or seminars.  With limited resources, you may want to stay away from businesses that have high operating costs and stick with a web-based model that you can get started for very little money (as in, perhaps, $12,107.09).
7. Question: Do you have to have a PowerPoint pitch?Answer: If you have five hours a week to work on your business outside of your day job, save your PowerPoint skills for the office.  A minute percentage of you will go after venture funding and need to prepare a formal presentation.  The more you get in front of real customers and tell a compelling story in few words about how you can solve their problems, the less you will need PowerPoint as a crutch.  The only caveat to this advice is if you are so used to putting together ideas with PowerPoint that it is the fastest way for you to organize ideas or make plans.  Whatever you do, don’t bombard poor, innocent people in the real world with corporate jargon. You just may find your paradigm is shifted right out the door.
8. Question: Do you have to have a business plan?Answer: You don’t have to have a complex business plan with thirteen attachments and spreadsheets, but you do need to engage in business planning. Know the kinds of problems you are trying to solve, and what value solving them would bring to your customers. Get clear on resources needed to bring your business to life.  Start by guessing how many widgets you plan to sell, so at least you have a good laugh the next month when you look at actual sales.  But as business planning guru Tim Berry told me about projections, they are only guesses for a month.  After that, you have real data to compare.  So move quickly, test often, fail fast, and discuss and document your assumptions.  If you keep everything in your head, you will limit your creativity, and in the long run limit your growth.
9. Question: What is the fastest way to build buzz about a company?Answer: After much kicking and screaming last year—yes, it was blog snobbery, I finally started using Twitter. And I am now convinced it is the absolute quickest way to get to know your customers, build relationships with partners and mentors, and get the word out about what you are doing.  Of course it cannot be your only marketing strategy, since people hunger for more than 140 character bites of you, but if you aren’t on Twitter, you are missing great opportunities, plain and simple.
10. Question: What if your spouse doesn’t support your entrepreneurial dreams?Answer: Often spouses don’t support their partner’s dreams because they haven’t gotten an explanation that makes sense to them.  You may spend all your time thinking about your business, evaluating the market, and developing your products or services, but your spouse doesn’t see inside your head and understand the reasoning behind your decisions.  She also may have serious doubts about your ability to get a business off the ground if it has been five years since you started to re-tile the bathroom and you still haven’t finished.  So demonstrate in big and small ways that you can follow through with plans, listen with openness and without judgment to concerns raised, and make a plan that feels like a reasonable amount of risk to both of you.  When you go into business, your whole family goes in with you. So be sensitive to concerns.
11. Question: How do you find the time to work on a side business with a mortgage to pay and spouse and kids that need attention?Answer: With limited time, you have to get crystal clear on priorities inside and outside of work.  Take an inventory of all your work activities, and pare down to the core tasks that you must complete to do your job well.  Evaluate how you spend your time outside of work.  Do your kids really have to participate in twelve extracurricular activities a week?  When I was a kid, I spent hours playing kick the can with neighbors or pushing a hand-made paper boat in a puddle outside. I had a great childhood and have done just fine as an adult. When you are running on a very lean and efficient schedule and have a manageable list of weekly tasks for your business, you will make progress. It is better to take small steps every day—like writing one paragraph of your book or crafting a handful of code—rather than waiting for a huge block of time to open up because this will never happen.
12. Question: What is the most common mistake the “escapees” make?Answer: The most common mistake is thinking that they have to get all their plans absolutely perfect before launching. I have listened to people explain why they spent two months crafting an introductory email to a potential client.  Perfectionism will cripple your business and thwart your plans faster than anything.  Get used to pushing things out that feel not quite ready and then be completely responsive to fix them as you go. There will never be a perfect product, service, market or economy, so the most passionate, enthusiastic and responsive entrepreneur will win.

Down the road we’re probably going to have access to something approaching all information all the time. Our lives – much longer by then because of the implications of this for medical care – will be enriched, even as our behavior will be very unlike how we live today.

Already much of our software and data is moving to giant remote servers connected to the Internet. Our photos, music, software applications like Microsoft Word, and just about everything else we use a computer for will be accessible to us wherever we go.

The other huge, and related, move of the moment is toward ultimate mobility. Several trends are taking us there. The cellphone is becoming more like a PC while the PC is becoming more like a cellphone. In short, the next great era of computing – succeeding the PC one – will likely be about smaller, cheaper, more-powerful portable devices.

If you wonder how devices can get smaller and yet replace the PC, keep in mind that a major innovation we’re seeing right now is vastly-improved voice-recognition software. While it only works on the fast processors of a PC today, the inexorable growth of computing power will soon take that kind of power into your cellphone. So long keyboard!

In the next phase, the devices essentially disappear. An article in the new issue of Fortune by Peter Schwartz and Rita Koselka describes the amazing coming world of quantum computing.

Forget the technical details – quantum computing is tough for non-engineers to grasp. Suffice it to say that if you thought the increase in computing power was impressive during the past 20 years, the pace will likely speed up radically as quantum computing takes hold within the next decade.

In a short piece I wrote as part of a broader look at the future last September, I speculated that in the future we would feel that everything in life had become like an open-book test. “Any kind of information is available anytime you want it,” I wrote. “Simply speak a question, or even think it. You will always be connected wirelessly to the network, and an answer will return from a vast, collectively-produced data matrix. Google queries will seem quaint.”

At the time, I thought I was being a little wild, but less than a year later such talk is almost routine in the futurist camp. Chris Taylor at Business 2.0 this week published “Surfing the Web with Nothing but Brainwaves.” Taylor explains that already quadriplegics can play videogames, control robotic arms, and turn a TV on and off, using only their minds. They are connected to a computer with an implant that reads electrical patterns in the brain.

Sony has already patented a game system that beams data directly into the brain without implants, reports Taylor.

In the future quantum-computing world which Schwartz and Koselka describe, we’d go way further. Computing power would be so great that we could easily have “network-enabled telepathy.” We’d wear headbands with unimaginable computing power.

It’s fascinating to consider some of the potential social and even political ramifications of such a turn toward ubiquitous information availability. The necessity to learn languages might disappear. If the devices necessary to participate in this information revolution were cheap enough, and the network truly ubiquitous and global, the economic playing field could be leveled. If information is power, everyone would have it. That’s the kind of breakthrough the developing world needs.

Even moral codes and behavior might alter, if all that available information led to a profound transparency in human conduct. One of my beliefs is that people will routinely record their entire lives on some equivalent of video.

Sharing your personal history – warts and all – might then become routine, in order to improve your perceived trustworthiness. Computing is now so important that to talk of its future is inevitably to consider the future fate of mankind.

1. Not communicating with the team. I know, I know, you’ve seen the advice for communicating so often you want to smack someone. I want to smack myself for saying it so often. But you know what? Unless you’re on the front line heading into a military battle, you have to take time to communicate with your team members. You don’t have to pass on every shred of information you’ve gotten from upper management on a new initiative, but you have to give them enough information to know why they’re being asked to do what they’re being asked to do. The more information your team members have, the more ownership they’ll feel in the process, and the better they’ll perform.
2. Continually focusing on the negative. Thinking in negative terms is a common result from working in a reactive environment, which IT tends to be. In that environment, IT spends most of its time keeping the negative to a minimum with goals such as decreasing network downtime or putting out fires. A good leader has to make an effort to recognize the positive. (How about mentioning increased uptime?) Recognize your people for the forward progress they make and not just for their efforts to keep things from getting worse.
3. Changing policy due to one person. The term “team” makes some managers think they have to treat everyone the same way. This is true in many cases, but if one person has a performance issue, don’t take across-the-board measures to correct it just because you’re afraid of confronting that one team member. If one team member is failing to complete some duties in a timely manner, don’t introduce a policy forcing the whole team to submit weekly progress reports. Deal only with the one with the issues.
4. Not understanding the needs and concerns of your team. Some IT leaders find it virtually impossible to tell their bosses that something can’t be done. The team’s bandwidth or overall state of mind takes a backseat to real or imagined glory of being the guy who “gets things done.” Good managers don’t over-promise on their team’s behalf.
5. Never admitting you’re wrong or never taking responsibility. There’s risk involved in being a manager of a team. And that risk is, if your team fails at something, you should and will be the one held accountable. It doesn’t matter if one team member screwed something up; your job was to manage the overall process of all the team members, and you didn’t do it. So suck it up and own up to that. On a related note, if one of your actions caused a kink in a project, admit it. It’s ironic but not owning up to a problem damages your credibility with your team more than simply saying, “I was wrong.”