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SkepticismPhilosopher Stephen Toulmin talks about the difference between the modern use of the term "skepticism" and the way the word was used by the Greeks, as well as by Ludwig Wittgenstein. Nowadays, Professor Toulmin explains, the word is used to mean refusing to believe things. In the time of the Greeks, as well as in the works of Wittgenstein, skepticism meant being careful to only ask questions that make sense.