If I asked Dan Gilbert a question as the interviewer, I would ask: "If humans exhibit a large amount of herd behavior, what is the best way to enact a change if there is considerable resistance to new concepts due to fragmentation in the political or social belief systems?"
I find this question to be valuable because he discusses a little bit about how to change people's behavior, and notes that regardless of what someone thinks about an issue (like environmentalism/climate change) on face value, their behavior will change along with the rest of the community. This question is designed to dig deeper, probing the extent of persuasive techniques or those that take advantage of group-mentality when group-mentality might be hard to pin down in a particular social context. Active resistance to new (presumably positive or forward-looking) principles/policy, even those adopted by others around you might cause a halt in the spread of such things-- how do we circumvent this issue?