If you jump to the 3:20 mark, you can hear one of the most logical, interesting and honest approaches to scientific developments ever said. To set the scene, Ross and Phoebe are arguing about evolution after Phoebe says she doesn't believe in it. She's not arguing that it isn't real, just that she doesn't believe in it.
The quote I was referring to is thus: "Now, wasn't there a time when the brightest minds in the world believed the Earth was flat. And up until like what 50 years ago, you all thought the atom was the smallest thing until you split it open and this like whole mess a crap came out..."
In essences, the quote highlights one of the most outrageous facts about science: that nothing is ever 100 percent the final answer. Right now, DNA is one of the biggest topics in the medical field. Just this September one of New York Times' most prolific columnist wrote a huge article about a discovery that is suppose to change how DNA is viewed. However, the article would gather large criticism in the coming days.
Nonetheless, it highlights my point perfectly: every couple of years some Earth-shattering discovery is going to be made. Just last week, NASA announced that there might be water/ice on Mercury. With the medical field expanding and increasing in profitability, we can only expect there to be more and more 'life-changing' ideas and theories being published.
Edited to add: Don't get me wrong, I love that there are new discoveries being made ever day. It's just, at what point do these discoveries jade us. At what point do we lose the "Gee Whiz" factor.
Or, do these discoveries only heighten the Gee Whiz reaction from us? Almost like we know we'll never fully understand the universe, but that isn't stopping us from trying. That each new discover is like wiping fog off a window: we just want to see more of what this world has to offer.