I posted this image in 2004. . Even more relevant now. While we have a country that is clearly divided, the dividing lines are not so neat as the maps showing states going one way or the other. Updated Nov 7, see also

Read More Maps and Visualization

Post thumbnail

I was not aware that the ITU had formalized swim lane diagrams into Message Sequence Charts. While you don’t need to use these formalizations, the choices they made, and the comparisons to UML’s diagrams can be interesting, especially if there are tricky corners where you’re having trouble modeling some flow. For example, “They work particularly…

Read More Message Sequence Charts

Post thumbnail

The image above is the frequency with which streets travel a certain orientation, and it’s a nifty data visualization by Geoff Boeing. What caught my attention was not just the streets of Boston and Charlotte, but the lack of variability shown for Seattle, which is a city with two grids. But then there was this…

Read More Threat Model Thursday: Legible Architecture