In any field, experience is required for a proficient person to become an expert. Through experience, a proficient person gradually develops a repertory of model situations that allows an immediate, intuitive response to each new situation. This is the hallmark of expertise, and for this reason computerized "expert systems" cannot be as good as human experts. Although computers have the ability to store millions of bits of information, the knowledge of human experts, who benefit from the experience of thousands of situations, is not stored within their brains in the form of rules and facts. The argument requires the assumption of which one of the following? ['The knowledge of human experts cannot be adequately rendered into the type of information that a computer can store.', 'Computers can show no more originality in responding to a situation than that built into them by their designers.', 'Future advances in computer technology will not render computers capable of sorting through greater amounts of information.', 'Human experts rely heavily on intuition while they are developing a repertory of model situations.']