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The term inverse deduction commonly appears as induction. In symbolic reasoning, deduction expands the realm of human knowledge, while induction raises the level of human knowledge. Induction commonly opens new fields of exploration, while deduction explores those fields. However, the most important consideration is that induction is the science portion of this type of reasoning, while deduction is the engineering. The two strategies work hand in hand to solve problems by first opening a field of potential exploration to solve the problem and then exploring that field to determine whether it does, in fact, solve it.

As an example of this strategy, deduction would say that if a tree is green and green trees are alive, the tree must be alive. When thinking about induction, you would say that the tree is green and the tree is also alive; therefore, green trees are alive. Induction provides the answer to what knowledge is missing given a known input and output.