Are we capable of processing and relating to the currently available amount of (diverging) information?
If this issue is a backwards trend, it's one that is only possible because in a reality which has been shaped by the preceding two decades where we've seen a trend with exposure us to an increasing, almost infinite, amount of information.
The core human instinct is to seek and relate to similar peers. We need a "home base" to feel safe, where the things that worry us in some way relate more directly to ourselves and the close peers we identify ourselves with. I don't think we're *really* cognitively equipped to relate to and empathize with an entire world of differing opinions, cultures, and problems.
It's an ideal that must be pursued, because I agree with Eli that we may be digging ourselves (willingly as well as unwillingly) into these "bubbles" of safe havens where we aren't questioned, provoked or adequately challenged. Especially since I believe that knowingly or unknowingly, we all seek these bubbles for the same reason that all this information exists: We simply cannot cope with the sheer magnitude of it. Processing information properly requires relating to it, be it global warming, riots in Lybia and neighboring countries, death camps in North Korea, radiation from Fukushima, US foreign policies, local elections, slaughterings in Darfur, Palestine and Israel, starving children in Africa, Indian workers killing themselves for pennies making our clothes... The list goes on and on, and just writing this fraction of events down which we're all supposed to relate to, makes me want to crawl into a bubble.
So yes, we should make sure that these algorithms don't aide us in our instinct to reclude ourselves, but a 9-minute talk is nothing but a baby step in even explaining the magnitude of the task at hand.