||If I may put my two cents in, I would like to say this is something that requires some knowledge of cognitive science, not only GIS because it touches problems involving procedural vs. declarative memory, implicite vs. explicite rules in human decision making.
Because to add a few rows to an already selected set is a decision that is made by a human mind by different kinds of criteria, some of the criteria are not even consciously taken into consideration because they are not kept in the *declarative* (see: http://en.wikipedia.org/wiki/Procedural_memory ) memory at all, or intuitively chosen ("instinctive"), and/or too complex and changing for each row that is to be added to the selected set.
This knowledge of the cognitive psychological science would suggest to us that the user making such a decision should be *free* to firstly *see all* rows together *in one window* both the selected and the non-selected ones (where the selected ones would be shown together - promoted) and *secondly* to click-select them without requiring of him firstly to define (put it into declarative memory) the criteria and secondly go through the process of making a query for each of them to be added to the selected set. At the present moment this is not allowed in your GIS 9.x.
I hope you agree with my conclusions,
especially because it's nothing wrong
with the new, advanced and intelligent
ArcGIS 9.x, except that it is the
knowledge of cognitive science that
needs to be taken into consideration, too.
Office for Road System Records and Archives
Among other tasks we collect and store GIS data on state road locations and their elements and structures, structure conditions, traffic signalling and road equipment, sections' lengths, traffic counting, and data on maintenance performed on the state roads sections which is needed for state's roads planning, maintenance, construction and management and for supervising other public roads data sent from municipalities.
The Directorate of the Republic of Slovenia for Roads, Ministry of Transport, Slovenia, European Union