Openness

Another aspect of my 'conviction bank' being brought into the docks in recent times is the notion of openness.  While I understand that having an open attitude in life is more beneficial than a closed or rigid attitude.  However, is it really possible to be open-minded all through?  I used to chuckle at the quote I came across many years ago

Don't be so open-minded that your brains fall out!  

But the point is that at sometime or the other we form a view and then stick to it. One cannot always be open to all and every different opinion or view on any matter.  Once we have taken a stand, we then can be open minded by letting it stand the test of ... whatever.  If it stands, good. If not, adopt a new stand?  If so, we'd go on changing views and convictions to no end.  So we have something fixed and other aspects flexible?  On the spectrum of fundamentalism at one end, and openness at the other, where does the middle lie? 

Or perhaps, I'm confused!