Common liberals have not been bright enough to figure this out.

Liberals may be misguided but in my experience the "common liberal" is brighter than the "common conservative".  Whereas the "common liberal" bases their beliefs, right or wrong, primarily on their desires for bettering society, the "common" Bubba conservative beliefs are shaped by prejudices and fears.

BTW, the poster you replied to is about as liberal as Kevin Trudeau is an actual health authority.

DQ

"A real investigation goes to the scenes and examines what really happened (not what someone like Michael Moore says).  The theories should be derived from the evidence and not the other way around.  In a long dragged out trial, different cases are presented and examined from different angles.  Common liberals have not been bright enough to figure this out.  They rely on what they want to believe based on their emotions and what is somehow cool to believe in."

You are severely deluded or brainwashed if you think 911 was investigated.  This is rather common among denialists and lazy thinkers who can not get past their cognitive dissonance from their minds being branded with faith based (non logical) mental patterns.  God and country right?  The ends justify the means right?  Like the mother who thinks her murdering rapist son could never be guilty, just can't face the truth.  Not surprising from the American populace who gladly sacrifices their sons and daughters to die in wars for the powers that be so they can remain in the illusion that they are somehow inherently worth more than foreigners. 

And by the way, most foreigners think 911 was a conspiracy.