I suspect such things as Google picking answers based on past searches will increase this problem, since people will be confirmed in their bias every time they look for information, while making knowledge and understanding of the other sides less likely.
Reductionist and proud of it.
Being ignorant is not so much a shame, as being unwilling to learn. Benjamin Franklin
Chase after the truth like all hell and you'll free yourself, even though you never touch its coat tails. Clarence Darrow
A person who won't read has no advantage over one who can't read. Mark Twain