The most challenging thing about designing for the web is its rapid rate of change. If Internet technology is continually reinventing and refining itself, how can a developer keep up?
Karen's greatest asset is perhaps her ability to learn quickly. Her insatiable
curiosity (or was that her low-attention span?) leads her to follow the progress
of new and emerging technologies as they develop, often with no more incentive
to do so than personal fulfillment.
As a result, even more significant than her ability to implement such things Cascading Style Sheets, dynamic HTML and Flash today, is the fact that it can be expected that she will also be able to implement new innovations tomorrow.
Furthermore, this means that if somewhere down the road she needs to use a skill she has not yet fully developed, she can be relied upon to master it quickly and efficiently.