The will to truth which will still tempt us to many a venture, that famous truthfulness of which all philosophers so far have spoken with respect—what questions has this will to truth not laid before us! What strange, wicked, questionable questions!
—Friedrich Nietzsche1
In the early morning of Wednesday, September 29, 1982, a twelve-year-old girl in Elk Grove Village, Illinois, swallowed a capsule of Extra Strength Tylenol. Shortly after that, she collapsed and died from cyanide poisoning. Within three days, six other people in the Chicago area had also died in a similar fashion. Investigators soon discovered the link between the deaths and poison in the Tylenol. Urgent warnings were broadcast, and police drove ...

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