In general, the ITS system can be said to have been designer implemented and user designed. The problem of unrealistic software design is greatly diminished when the designer is the implementor. The implementor's ease in programming and pride in the result is increased when he, in an essential sense, is the designer. Features are less likely to turn out to be of low utility if users are their designers and less likely to turn out to be difficult to use if their designers are their users.
-Donald Eastlake, ITS Status Report, MIT A.I. Lab Memo No. 238, April 1972., from Steven Levy's _Hackers_, 1984, p.127
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