I'm glad I'm not the only geek on here. When I post science stuff I realize there's a good chance it goes uncommented on.
That's a really interesting artice because it captures these scientist in the act of thinking out loud. They're taking the limited data they have and are already forming hypothesis for what they are seeing. But like good scientist they're being cautious.
The human interest part of the story is that the remains of Pluto's discoverer, Clyde Tombaugh, is actually interred on board the New Horizon. I think though that Percival Lowell should be credited as well. Although he didn't make the discovery, he was the one that predicted that a planet (now dwarf planet) was in the area where Pluto was discovered. He surmised this by observing the behavior of the orbit of Neptune and Uranus. He just died before it was discovered. Without Lowell, Tombaugh wouldn't have had a reason to look for it.