This led to an ends-justify-the-means attitude: the
result—a strong chess program, for example—was all that mattered, not
the means by which it was achieved. In contrast, much of the mainstream
AI work used simplified domains, while eschewing real-time performance
objectives. This research typically used human intelligence as a model: all
one had to do was emulate the human example to achieve intelligent
behavior. The battle (and philosophical) lines were drawn