Who cares? What's the point?
If they agree with you, you'll just do the "we're so right" weeny rub.
If they don't, neither one of you is going to sway the other and you either spend the rest of the flight looking out the side or just agree to disagree.
Regardless of which scenario plays out, nothing changes - so why go there in the first place. Fly the airplane, get from A to B and talk flying or something else simple that you have in common.