These constitute the evidence against Dr X. But an argument for the conclusion that Dr X murdered the victim based on PI alone (along with a suitable connecting premise), would not be inductively forceful. If it were, then the argument would point with equal force to the guilt of a great many other people with the requisite knowledge of strychnine. Nor would an argument similarly based only upon P2, P3 or P4. If the prosecutor were to advance any of these four separate arguments by itself, then the jury could only conclude that the prosecutor lacks a compelling case: none of the arguments would be inductively forceful. It is essential to the prosecutor's case that these four items of evidence point jointly to the defendant's guilt. The argument, then, should be constructed like this:

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