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Now that you ve had a taste of using BBP as a way to present The Plan, the next example presents a new challenge communicating the results of market research you conducted to your company s clients with The Analysis. Your client s sales have dropped, and the client has asked your market research rm to help. This type of presentation featuring quantitative information is typically called a data-driven presentation. But given the research realities presented in 2, it s ironic that many conventional PowerPoint presentations that are called data-driven actually do not have a research basis built into the foundation of the presentation approach itself. These presentations subscribe to the myth that you can simply drive data into your audiences heads and they will get it, with no regard for the importance of respecting the limits of working memory when you present new information, synchronizing the visual and verbal channels, and guiding the attention of an audience in speci c ways. BBP, on the other hand,

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Once the page loading is complete, Internet Explorer makes available the document property that allows you to get full access to the Document Object Model (DOM) of the Web page that it has loaded, much in the same fashion as from JavaScript. For example:

def test(): print 'This is printed' return print 'This is not' Here, the return statement is used simply to end the function: >>> x = test() This is printed As you can see, the second print statement is skipped. (This is a bit like using break in loops, except that you break out of the function.) But if test doesn t return anything, what does x refer to Let s see: >>> x >>> Nothing there. Let s look a bit closer: >>> print x None That s a familiar value: None. So all functions do return something: it s just that they return None when you don t tell them what to return. I guess I was a bit unfair when I said that some functions aren t really functions.

from Ruby in this manner, but it s beyond the scope of this book to provide an advanced guide to Windows development. The Win32Utils project provides further Windows-related Ruby libraries at http:// rubyforge.org/projects/win32utils/.

9

This section was designed to demonstrate that although Ruby s origins are in Unixrelated operating systems, Ruby s Windows support is significant. You can access Windows APIs, use OLE and OLE Automation, and access DLL files. Many Windowsrelated features are advanced and beyond the scope of this book, but I hope this section whetted your appetite to research further if this area of development interests you.

Thread is short for thread of execution. You use threads to split the execution of a program into multiple parts that can be run concurrently. For example, a program designed to e-mail thousands of people at once might split the task between 20 different threads that all send e-mail at once. Such parallelism is faster than processing one item after another, especially on systems with more than one CPU, because different threads of execution can be run on different processors. It can also be faster, because rather than wasting time waiting for a response from a remote machine, you can continue with other operations. Ruby doesn t currently support threads in the traditional sense. Typically, threading capabilities are provided by the operating system and vary from one system to another. However, the Ruby interpreter provides Ruby s threading capabilities directly. This means that they work well on every platform that Ruby works upon, but they also lack some of the power of traditional system-level threads.

accepts these research realities and subscribes to the idea that there is no such thing as a data-driven presentation there are only cognitive-driven presentations, because ultimately the audience s minds will determine whether understanding happened, not the data. Act I of The Analysis presentation, shown in Figure 9-15, is a good example of how dramatically different a formerly data-driven presentation looks when you restructure it using BBP. In this example, the Setting statement summarizes that your client has hired your market research rm because Your sales dried up last year in your most lucrative market segment. Next the Role statement puts your client in its proper place as the main character of this story as You asked us to drill into the numbers and analyze the situation. The Point A statement explains the challenge you believe the client faces, You have tapped out your existing revenue base. Point B then goes on to con rm to your client that You need a strategy to get pro ts owing again. Now what should the client do to get from A to B It should Tap into three undiscovered wells of revenue by reaching new customers in new ways, according to your Call to Action slide.