I am using “logic” in two different ways: Aristotelean logic and existential logic.
Aristotelean logic can be considered “formal” logic, philosophical logic, mathematical logic, intellectual logic, or common sense logic. This is the kind of thinking where you say, “if this, then this”; “2 + 2 = 4”; or “if I speed, I may get a speeding ticket someday.”
However, there is “existential logic” in everyday life as well. Life has a logic of all it’s own. This may the logic in history, especially in everyday history. For instance, if you denigrate your wife, her love for you may eventually dissipate. If you mix two chemicals, a new molecule may be created.
With the same existential logic you may conclude that if abortion is universally. then (by existential deduction) man’s conscience will become more blunted, and other “sins” will probably be committed — like the destruction of the environment.
In another example, if people are paid more not to work than to work, then (by existential deduction) they will probably work less.
This existential logic can only be learned by experience. It is called wisdom.
This is why they say if we do not learn from history, including our own personal history, we are condemned to repeat it.