Progressives, unlike conservatives, get better informed with time

Talking with some friends last night about this study, showing that people are very effective at filtering out information not conforming to what they already believe, it struck me that while progressives are also subject to this phenomenon, in their case the end result is likely to be more and better acquaintance with the facts.  That's 'cause progressives, unlike conservatives, typically start out in the ballpark of reality and so are more likely to be able to "take in" the true, subsequently refining their basically correct positions towards the increasingly accurate.