[Originally posted 2009-08-16. Because Parkinson's work seems quite relevant to the current discussion of cacaphony, I'm reposting. Where was it written that if the other side of the house says A, I can't say A without joining them? Other than in Parkinson's Law?-- lambert]

C. Northcote Parkinson, Parkinson's Law, "The Will of the People," pp. 14-15:

WE ARE ALL familiar with the basic difference between English and French parliamentary institutions; copied respectively by such other assemblies as derive from each. We all realize that this main difference has nothing to do with national temperament, but stems from their seating plans. The British, being brought up on team games, enter their House of Commons in the spirit of those who would rather be doing something else. If they cannot be playing golf or tennis, they can at least pretend that politics is a game with very similar rules. But for this device, Parliament would arouse even less interest than it does. So the British instinct is to form two opposing teams, with referee and linesmen, and let them debate until they exhaust themselves. The House of Commons is so arranged that the individual Member is practically compelled to take one side or the other before he knows what the arguments are, or even (in some cases) before he knows the subject of the dispute. His training from birth has been to play for his side, and this saves him from any undue mental effort. Sliding into a seat toward the end of a speech, he knows exactly how to take up the argument from the point it has 14 reached. If the speaker is on his own side of the House, he will say "Hear, hear!" If he is on the opposite side, he can safely say "Shame!" or merely "Oh!" At some later stage he may have time to ask his neighbor what the debate is supposed to be about. Strictly speaking, however, there is no need for him to do this. He knows enough in any case not to kick into his own goal. The men who sit opposite are entirely wrong and all their arguments are so much drivel. The men on his own side are statesmanlike, by contrast, and their speeches a singular blend of wisdom, eloquence, and moderation. Nor does it make the slightest difference whether he learned his politics at Harrow or in following the fortunes of Aston Villa. In either school he will have learned when to cheer and when to groan. But the British system depends entirely on its seating plan. If the benches did not face each other, no one could tell truth from falsehood-- wisdom from folly-- unless indeed 15 by listening to it all. But to listen to it all would be ridiculous, for half the speeches must of necessity be nonsense.

In France the initial mistake was made of seating the representatives in a semicircle, all facing the chair. The resulting confusion could be imagined if it were not notorious. No real opposing teams could be formed and no one could tell (without listening) which argument was the more cogent. There was the further handicap of all the proceedings being in French--an example the United States wisely refused to follow. But the French system is bad enough even when the linguistic difficulty does not arise. Instead of having two sides, one in the right and the other in the wrong-- so that the issue is clear from the outset--the French form a multitude of teams facing in all directions. With the field in such confusion, the game cannot even begin. Basically their representatives are of the Right or of the Left, according to where they sit. This is a perfectly sound scheme. The French have not gone to the extreme of seating people in alphabetical order. But the semicircular chamber allows of subtle distinctions between the various degrees of rightness and leftness. There is none of the clear-cut British distinction between rightness and wrongness. One deputy is described, politically, as to the left of Monsieur Untel but well to the right of Monsieur Quelquechose. What is anyone to make of that? What should we make of it even in English? What do they make of it themselves? The answer is, "Nothing."

All this is generally known.