I have just discovered another great use for Gingko, the horizontal outliner: planning PowerPoint presentations. Why not just use PowerPoint itself? There are a number of reasons. While PowerPoint is very good for presenting the end result, it is not so good for developing the content itself. Sure, you could start adding the content straight into the slides; however, if you still need to develop the conceptual side of your argument, you will find that PowerPoint is not the best place to work it out in.
Firstly, space on each slide is limited. You could try moving some of the expanding new material into the notes area below the slide, but then soon you will start losing contact with the text, as it will disappear under the fold–not to mention that you can only view the comments for one slide at a time. This will inevitably prompt one to move content into a new slide, and the dangerous proliferation of slides begins.
However, presentation time usually is also limited, which means that it would make more sense to determine the maximum number of slides up front, and stick to it religiously. This is where Gingko comes in. Let’s take the example of a 30-minute presentation. If you apply a rule of thumb that one slide will take about 3 minutes to present and explain, then you should have no more than 10 slides.
As Gingko index cards look very much like slides, it is easy to set up 10 blank Gingko cards sequentially in a column. As you start developing the content and find that you have more material than you can present in a single slide, you can start moving the less relevant material to linked cards in an adjacent column to the right. Gingko allows you to add as many linked cards as you like, in as complex a hierarchy as you like, while preserving the integrity of the original 10 slides.
The reason this works well for conceptual development is because you can see all the material laid out in front of you (as opposed to the single slide view in PowerPoint), and it is easy to move text and cards around as you are abstracting, reducing, organising, and synthesising. No matter how messy and complex your working-out process is, at the end the original slides will contain the essence of your project, assuming that you have stuck to your guns and avoided the temptation to add more new slides.
Think of the top 10 slides as the tip of the iceberg that contains all the essential information that needs to be presented. Everything under the water level is still important as supporting material, but it does not need to be featured in the slides themselves, considering that there wouldn’t be time to discuss them in the presentation anyway. The end of the process is just a simple copy-and-paste job from Gingko to PowerPoint, although you could also use some of the other more sophisticated export options available (Markdown, HTML, .docx, impress.js, or json).