Describe three principles of direct manipulation. Give four benefits of direct manipulation. Also list four problems of direct manipulation. Explain the differences between various kinds of direct...

Describe three principles of direct manipulation. Give four benefits of direct manipulation. Also list four problems of direct manipulation. Explain the differences between various kinds of direct manipulation with respect to translational distances. Explain how virtual reality can be used for medical purposes . List an example of teleoperation or virtual reality. Consider what a future application (that does not present ly exist) might do. Be creative!