Tacit knowledge and software usability
Jon Udell talks about how technologists are a breed apart.

"For years people have argued that software must relentlessly improve its score on the "mom test" and that is certainly true. But there's another angle here comes back to the KM aspects of blogging. When we narrate, we externalize what we know. We convert tacit knowledge to explicit knowledge. This can help software become more usable for two reasons. First, when technologists narrate what they know, they're more likely to realize how much tacit knowledge they have and expect in others. Second, when non-technologists narrate what they know, technologists can see more clearly that the expected tacit knowledge is missing."

[via David Watson]