Agroup of new law school students were told look to your right and look to your left. only one of you will still be here in four years. this is an example of using to build rapport.

This is an example of using personalized statistics to build rapport. 
Statistics say that in the past, only one of those law students were still there at the college - it is not a myth, but rather the reality that happened before. This is the reason why the professor can safely say this to new law school students as well given that there is solid proof it will happen again based on those personalized statistics.