Invisible tools

A good tool is an invisible tool. By invisible, we mean that the tool does not intrude on your consciousness; you focus on the task, not the tool…Good tools enhance invisibility.
…Unfortunately, our common metaphors for computer interaction lead us away from the invisible tool, and towards making the tool the center of attention.
…magic is about psychology and salesmanship, and I believe a dangerous model for good design and productive technology. The proof is in the details—magic ignores them. Furthermore magic continues to glorify itself

— Mark Weiser, The World Is Not A Desktop, ACM Interactions, January 1994

See also: Not invented here