Richard G. Davis wrote: >There is no one single model for human-computer interaction that will serve >well within VistA as the only style in use.
"model" and "style" are very different concepts. One thing that seems very clear is that the "dumb terminal" or CHUI mode of user interface is extremely limited in the models and styles and the types of data that it can support. It has also become increasingly at odds with the expectations and skills of new users. >While the VistA 'conversational' style of human interaction is regarded as >'inferior' or 'udesireable', these perspectives are ill-advised. On the I certainly did not mean to imply in my comments that a conversational style of user interaction is bad. My point in the previous discussion is that it is hard to wrap up a conversation in a simple GUI, at least working from the outside. >contrary, the classical DHCP/VistA style of interaction is superior to any >other style for many tasks. Perhaps even a large majority of VistA tasks. I don't believe that such an open-ended hypothesis can be proven conclusively, except perhaps in the negative. I could probably still agree that a conversational style of interaction (perhaps even terminal based) could be superior to some specific alternatives in some contexts of tasks and users, but the alternatives are growing in number and capability and the users are changing as well in the direction of demanding richer (and simply different) user interfaces. >The price of imposing GUI on existing VistA applications is prohibitive, and >should only be considered when the benefits, in terms of real measureable >criteria, far exceeds the costs of making the changes to VistA. Some of the alternatives cost FAR less than others, particularly Open source and web based. --------------------------------------- Jim Self Systems Architect, Lead Developer VMTH Computer Services, UC Davis (http://www.vmth.ucdavis.edu/us/jaself) --------------------------------------- M2Web Demonstration with VistA (http://vista.vmth.ucdavis.edu/) (http://openforum.worldvista.org/~forum/m.cgi) --------------------------------------- ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Hardhats-members mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/hardhats-members
