No true seeker of truth can oppose the fully free marketplace of ideas. For details of the hardheaded practical case, you can do no better than to consult chapter 2 of John Stuart Mill’s On Liberty. If you can’t spare the time to read this short chapter and book, here’s the money quote: “He who knows only his own side of the case, knows little of that.”
Blackadder Was Ahead of His Time: The UK Military Death Spiral
"Tomorrow we attack the Germans" "Let me guess Sir, we climb out of our trenches and do a frontal assault" "Damn it, Blackadder, that's supposed to be a secret" "We've tried it 17 times before and always failed" "Ah, but they will never expect it an 18th time!" ***...