Let's say you're anonymous and the words you tell the target person are being received through text messages on a screen.

You can't resort to typical persuasive gimmicks like saying you have credentials in xyz field, or whatever. All of the things you'd use in-person doesn't count.

You can have more than 1 conversation with that person, and you're trying to change their mind on a specific position.

You can only analyze their general motives, general needs and general construction of beliefs and persuade them through those parameters. What techniques do you use?

How would you frame your position, and what would be the process for changing theirs?