Being open to new information allows one to increase in knowledge. It can, however, lead one down a descending path toward ruin as well as foster a climate of perpetual confusion thus overtaking the individual, who seems to be always seeking, but never finding.
Not all new information is good, helpful, or even true. One must, therefore, be quite discerning when it comes to the acquisition of knowledge. Then again, there are many things that our minds should never be open to in the first place.
My thoughts are one should face the world with a critical, yet open mind, but once truth has been ingested, that particular question no longer needs to be left open for debate or discussion. Should a person keep their mouths open after filling their bellies? Of course not, so why should the mind be any different. Once certain questions have been answered with good judgment and reason, one should make the decision to move on.
There are those who insist that open-mindedness is a virtue of sorts and although I would agree that there is much to gain, there is also much to lose. There are some things I am open to, but there are other things that the jury has already decided upon and coming to certain decisions in life has enabled me to move on.
Why beat a dead horse? Should we be a juror who is always deliberating life's questions, but never coming to a verdict? In the end, I think being perpetually open-minded is like building a house on shifting sands.