Context: According to two researchers, Nesse and Williams, diarrhea may function as an evolved expulsion defense mechanism. As a result, if it is stopped, there might be a delay in recovery. They cite in support of this argument research published in 1973 that found that treating Shigella with the anti-diarrhea drug (Co-phenotrope, Lomotil) caused people to stay feverish twice as long as those not so treated. The researchers indeed themselves observed that: "Lomotil may be contraindicated in shigellosis. Diarrhea may represent a defense mechanism".

Question: What did Nesse and Williams learn?
Answer: diarrhea may function as an evolved expulsion defense mechanism

Question: If diarrhea is stopped, would could happen?
Answer: there might be a delay in recovery.

Question: What happened with people with Shigella were treated with anti-diarrheal medication?
Answer: caused people to stay feverish twice as long as those not so treated.

Question: What is the function of Shigella?
Answer: Unanswerable

Question: If research is stopped, what could happen?
Answer: Unanswerable

Question: What happened to people with Lomotil when treated with anti diarrheal medication?
Answer: Unanswerable

Question: What is contraindicated in support of the argument?
Answer: Unanswerable

Question: What did the researchers discover about shigellosis?
Answer: Unanswerable