How do you know? 1) Have you searched the literature on perceptual defects and enablement? If so I'd love to see references. 2) Have you consulted widely on m

How do you know? 1) Have you searched the literature on perceptual defects and enablement? If so I'd love to see references. 2) Have you consulted widely on mailing lists that Gnome Terminal users use and checked use cases? If so, can you link to those? I'd like to see them.