"I'm not too worried about that. I am a big believer in modeling"

In this quote, Daniel Greenberg is revealing his confidence in his ability to manage a scenario. He is saying that he is not overly concerned about the issue at hand, and that he has faith in his own capabilities to model an effective result. This might indicate that he is confident in his capability to produce a strategy that will lead to a successful outcome, or that he is positive in his ability to use his own experiences as a design for how to handle the scenario. In any case, it is clear that Greenberg is confident in his own capabilities and is not extremely stressed over the outcome. He is a huge follower in the power of modeling, which might suggest that he believes in the power of setting a fine example and leading by example. This might also suggest that he thinks in the power of learning from the experiences of others and utilizing those experiences to inform his own decisions.