I only know two and they are
1. Not discussing issues and not supporting them with information.
2. Not giving advice on what to say/talk about.
Explanation:
Negative spaces are empty spaces that acquire a sense of volume and form by means of the outline or frame that surrounds them. Negative spaces can be used to suggest form. ... By means of illusion, a sense of depth or 3 dimensions an be achieved on a flat surface.
