There are also several problems with hypermedia as it is currently conceived. Hypermedia systems can be both confusing and disorienting, especially for the less able student. Disorientation and distraction can be caused by jumping around throughout the database, the sheer quantity of data, and the lack of information on database size and extent. Some systems may be sacrificing depth of learning for breadth. Finally, there is still a technological lag between the hardware and software currently available and what is needed for efficient, effective systems.
Further development is needed in optical and other storage methods and in equipment interaction.
Most of the projects described in the earlier book are employed in a research context. The later book discusses applications in public schools and higher education. 3D applications that can be used for a variety of subjects. Research and development are needed for more powerful searching techniques, better graphic structure searching, and friendlier user interfaces. This technology is just beginning to develop.