Problem: I do agree with you that JAD has its advantages over the traditional design techniques of the SDLC. I see that the main advantage is the result of the collaboration of both IT professionals and users in designing systems where group sessions play a significant role in facilitating this mission.
Do you think that the traditional SDLC has the disadvantage of one-on-one interviews to collect information or do you think that this is an advantage? I'm trying to point that the required level of communication and teamwork among all parties in a JAD methodology has its complications as well. What do you think?