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May 31, 2004

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Michael Bernstein

Hmm.

Web pages aren't sheets of paper either, but bullet points still increase comprehension:

http://www.useit.com/alertbox/9710a.html

I think the crucial difference is that both reports and web-pages are meant to be read and absorbed as a solitary experience, and the bullet points give you hooks to hang your recall on. An added benefit is that those will largely be the same hooks that other people have, so you can converse meaningfully about what you both read.

Powerpoint, though, is typically a group experience, and you can use many other means to provide the audience with shared experience hooks, most importantly by using your voice. Pithy, ascerbic, sardonic, or otherwise memorable 'catchphrases' easily serve the same purpose as a memory-hook.

In fact, I'd say that bullet points try to do in text what good speakers do in life, rather than the other way around.

Given that, there is one place that bullet points may be appropriate in a powerpoint presentation: In the notes area.

cliff

Thanks for the comment, Michael - I agree with your points. Your solitary vs. group distinction is an important one. I've come across research that concurs with the Jakob Nielsen study you referenced that compares narrative text vs. bullets, but haven't seen any yet that compares bullets to images. This is an important area that needs to be explored - the ways that images and layout techniques can communicate complex ideas outside of text or spoken words, as well as in combination with them. The other issue here is the quality of the bullets, whether they're onscreen or off -- are they a list of disconnected points, or do they reflect logical and clear thinking? The best work I've seen in this area is Barbara Minto's Pyramid Principle - it would be very interesting to see how both web and presentation designers would apply her ideas.

Christopher Fahey

My dad had lunch with Korky a few months ago, as Korky was an old friend of my late grandfather's. Someday I'd like to meet him myself and talk a little about those dots.

Davemccourt

I know this is an old post but... I did some research at university on bullet points and they've been around for some time in one form or another. They are often seen in the work of Modernist designers of the 1920s and 1930s and the glyphs used have been in printers typefaces since at least the 19th century. The earliest example I have seen was a German book from 1896; I am certain there are earlier uses. The punctus was used in Roman times in a similar way.

Their increased use in the 20th century is not due to technological advance but because of a change in the a) the type and formality of language we use and b) the frequency and volume of publications. Bullets allow writers to produce content more quickly and with less thought for composition; they also allow readers a quicker way to scan content and retrieve the relevant points of a piece of writing, which would take longer with continuous prose. There is a parallel with the use of bold type in the 19th century: bold was required as the volume of information meant readers needed to find information quickly such as on train timetables and the like.

The increase in self-publishing and small business publishing (reports, leaflets, correspondence, etc) from the 1930s onwards, is likely to be the catalyst behind the growth in the use of bullet points. The wider use of typewriters, then electronic typewriters and then personal computers only increased the need for this kind of device.

The bullet point is unusual in terms of punctuation in that it is often used in multiple contexts with the same shape. It is the user who needs to understand their use: for example bullet points can be used to indicate the start of an item and also the end. The bullet point is most common as a circle or square but many symbols can be used. This has lead to an interesting development in that the design of the bullet point adds context to the item it relates to. An example of this is commonly seen on packaging: bullet point 'ticks' used to show positive messages in a list or 'crosses' used to show negative aspects. I have seen pictures of gun bullets used in a list about effects of gun crime. The image or bullet shape reinforcing the content which is a unique feature amongst typographic symbols.

So A.F. (Korky) Kaulakis didn't invent bullet points but he was typical of clever people who used these devices to make the volume of printed information more digestible and easier to read.

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