to argue against an idea to test how strong it is
为了测试一个想法的强度而反对它 (weile ceshi yi ge xiangfa de qiangdu er fandui ta)
"I don't necessarily disagree, but let me play devil's advocate for a moment."
"我不一定不同意，但让我暂时扮演一下反对者。" (wo bu yiding butongyi dan rang wo zan shi banyan yixia fanduizhe)
