A Convincer Strategy is how a person comes to believe something to be true.
For some people, they need to see it with their own eyes. For others, they need to hear something multiple times from multiple people before they believe it
The convincer strategy has two parts.
1. Figure out what convinces someone, what inputs he needs to become convinced.
e.g. How you believe that someone is good at job? You may believe someone’s good when you see him doing a good job and when other people tell you he’s good
2. Discover how often he has to receive these stimuli before becoming convinced, e.g. heard once, multiple times, multiple sources or he might need continuous stimuli. Repeating the same concept multiple times helps in convincing
[via Sources of Insight]