A good example as to why causation isn't always connected is found on page 420. Hume asserts that only when two objects are "constantly conjoined" can observers "infer the one from the other." But rarely are two effects and two causes connected, Hume continues. If a cause and effect have "resemblance" to another cause and effect, they can be conjoined, but that is rare indeed.

Put into simpler words, Hume doubts that even with a repetition of conjunctions it would be safe to believe a "connection" between the cause and effect would be established. Indeed, after a person experiences sees instances repeated repetitiously, the mind is convinced through the person's habits and reflections that upon the introduction of one event, another event is expected to happen, and humans believe this will happen. His own explanation is that a cause is an "…object followed by another, and whose appearance always conveys...
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