Comment DWIM: Do What I Mean, by Warren Teitelman (Score 0) 123
http://en.wikipedia.org/wiki/DWIM
Quoting the quote:
Although most users think of DWIM as a single identifiable package, it embodies a pervasive philosophy of user interface design: at the user interface level, system facilties should make reasonable interpretations when given unrecognized input.
DWIM is an embodiment of the idea that the user is interacting with an agent who attempts to interpret the user's request from contextual information. Since we want the user to feel that he is conversing with the system, he should not be stopped and forced to correct himself or give additional information in situations where the correction or information is obvious.