An object or bit of information most needed will be least available. Any device requiring service or adjustment will be least accessible. Interchangeable devices won't. In any human endeavor, once you have exhausted all possibilities and fail, there will be one solution, simple and obvious, highly visble to everyone else.
Badness comes in waves.
He specializes in scientific visualization, 3D computer graphics, and virtual reality. He was the co-creator of The VRML Repository, the principal Web site for information on VRML software and documentation.