devil's advocate

Playing devil's advocate is a civic best practice, by making arguments for a position radically opposite from that which you actually hold, it is often possible to get opponents to make statements that support your own position.

This is a civic best practice because it helps defuse polarities beteween opponents and demonstrates that which is broadly agreeable to both.

A critic, who learns mainly by disagreeing, is particularly vulnerable to this tactic: they will position themselves against you, then, when you challenge them from the opposite side, they will restate your own position sometimes in your own words. Then you can quote them saying what you had said originally.

see also: cite their experts