> "Folks like Musk" are smart enough to know that the progress of humanity, the great and meaningful leaps of technology to strive for, are accomplished by people solving those hard problems under a common banner.
That's an interesting aspect of their work you point out. It made me think about describing my "banner" and add it to my HN profile.
It would be cool if we can all identify such "banners" under which we work in our HN profiles. Note that the banner doesn't have to be a technological breakthrough. In my case, for example, I wish for cultural impact.