Passage Summary: A skeptic argues that a new herbal cold remedy doesn't work because if it actually did, everyone would be using it, but they aren't.

Conclusion: The newly promoted herbal mixture is not an effective treatment for the common cold.

Reasoning: If the mixture were effective, almost everyone with a cold would use it to recover quickly; however, many people with colds do not use it.

Analysis: The speaker employs a conditional strategy to disprove a claim by showing that its logical consequences do not match reality. They start by assuming the remedy is effective and then demonstrate that this assumption leads to a scenario—universal usage—that is clearly false. To identify this method, focus on how the skeptic uses the 'Suppose X' framework to derive a contradiction. This is a classic structural move where a premise is undermined by the absence of its predicted effect.