1. Aguments against visualization include ``it is too expensive'', ``it is too complicated'' and some individuals find three-dimensional visualization difficult to achieve.

  2. Many commercial visualization packages tend to be expensive, require expensive equipment, or demand much experience or consultation to prepare even simple pictures. Simple pc chemical visualizations packages do not enable non-standard bond lengths or true 3D OpenGL lighting.

  3. The scenario where the graduate student visualization ``expert'' graduates and leaves the group in crisis has been known to occur.