ID&T is a Dutch entertainment and medium enterprise that was founded in the early 1990s. Their event Mysteryland is named the oldest electronic festival in the Netherlands, with later events like Trance Energy and Sensation. It operates many of the largest electronic dance music events in the world, including Tomorrowland, the largest in the world with over 400,000 attending in 2014.
ID&T stands for the initials of three founders of the company, Irfan, Duncan and Theo, all residents of Amsterdam. All three were experienced in the art of organizing house, techno and trance parties when they created ID&T, and their goal is to organize the largest events in the Netherlands and the European electronic dance music scene. Their first big event was "The Final Exam" in the Utrecht Conference Center, with about 13,000 people in attendance.
A user error is an error made by the human user of a complex system, usually a computer system, in interacting with it. Although the term is sometimes used by human–computer interaction practitioners, the more formal human error term is used in the context of human reliability.
Related terms such as PEBCAK (Problem Exists Between Chair And Keyboard), ID-10T error (idiot error), and other similar phrases are also used as slang in technical circles with derogatory meaning. This usage implies a lack of computer savvy, asserting that problems arising when using a device are the fault of the user. Critics of the term argue that the problems are caused instead by a device that doesn't take into account human limitations and is thus designed in a way that induces errors.
The term can also be used for non-computer-related mistakes.
Joel Spolsky points out that users usually do not pay full attention to the computer system while using it. He suggests to compensate for this to make usable systems, thus allowing a higher percentage of users to complete tasks without errors: