Scientific decision-making refers to various approaches to decision-making undertaken systematically often quantitative. Many of the "decision-making tools" that are in the IB Business and Management Guide are types of so-called scientific processes: decision trees, ratio analysis, force field analysis, etc.
Intuitive decision-making processes are often described as a "feeling" about the best possible course of action, but actually intuitive decision-making is often more rational than typically given credit. Intuitive decision-making often involves prior experience usually made consciously, but sometime subconsciously. Often some of these data do not fit the narrow structures necessary for scientific decision
making models. Intuitive decision makers often described intuitive decisions in affective terms: as "a hunch", a "feel", or intuition.
As a good manager, Martin is well trained in scientific decision-making models: decision trees, break-even analysis, ratio analysis, etc. He uses these types of methods to help him to evaluate options. Even when not formulaic, he uses solid logic and reasoning. For example, in addition to the cost savings from outsourcing the housekeeping staff, Martin is aware that this would provide him with an opportunity to terminate Susan's employment and, at the same time, take away most of her basis for a discrimination law suit.
Martin is also being influenced by intuitive decision-making processes. He senses the importance of Option 3, which would connect with the history of the hotel. He also has some sense of the growing importance to people from developed countries of eco-tourism and he can imagine The Imperial connecting to this global trend. Martin has a certain reluctance to lay-off the housekeeping staff (the employees would probably struggle to find new jobs), despite the cost savings involved. These intuitive processes make him question the value of the scientifically arrived at "best solution".
One point of comparison in the case is between Martin and Susan. Susan relied exclusively on scientific decision-making (and bureaucratic approaches, which often overlaps with scientific decision-making, though they do not necessarily have to). Because of this approach, she was perceived as cold, official and impersonal. She consciously would not let what she considered "non-relevant" information to influence her decisions. Martin, on the other hand, relied on both approaches, which made him more appealing at a human level though, from a certain perspective, left him open to criticism, eg his "laissez-faire" style.