reasonably be made.A fifth type, however, (or fourth if "avoided" and "no-brainer" decisions are combined as one type), is the collaborative decision, made in consultation with, and by agreement of others. Collaborative Decision Making revolutionized air-traffic safety by not deferring to the captain when a lesser crew-member becomes aware of a problem.

Another way of looking at decisions focuses on the thought mechanism used - whether the decision is:
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