Two weeks ago Banksy installed a fantastic statue in Waterloo Place in London . A man walking with strong reassurance, holding a flag in front of him as his reason to move forward. But the flag covers his face, blinding him, not letting him see that he will fall off the pedestal. I look at the statue and I can quickly think about many leaders that are blinded by a flag, an idea, a conviction, and they even hold that flag to blind all their followers, and no one can see that they will fall into the abyss. That might be the easy and quick observation of this brilliant work by Banksy. The next observation and thought that came to my mind might be even more important: Am I blinded by a flag? And in the community I belong to, are we blinded by a flag? Groupthink is one of the cognitive biases that don't let us see the faults in our reasoning and we make decisions just because they can easily be confirmed by what the group thinks.…