The intelligence of the creature known as a crowd, is the square root of the number of people in it.
Interpretation
Collective intelligence is often less effective than the individual intelligence of its members.
In this quote, Terry Pratchett humorously conveys the idea that a crowd's collective intelligence tends to be disproportionately low compared to the number of individuals in it. This suggests that while large groups can often be seen as wise or insightful, they can also lead to poor decision-making due to the dilution of individual thought and reason.
In practice
During a speech on group decision-making, one might refer to this quote to illustrate the potential pitfalls of relying on crowds for wisdom.
And then Jack chopped down what was the world's last beanstalk, adding murder and ecological terrorism to the theft, enticement, and trespass charges already mentioned, and all the giant's children didn't have a daddy anymore. But he got away with it and lived happily ever after, without so much as a guilty twinge about what he had done...which proves that you can be excused for just about anything if you are a hero, because no one asks inconvenient questions.
They've got something they do it with, I think it's called a mocracy, and it means everyone in the whole country can say who the new Tyrant is. One man ... one vet. ... Everyone has ... the vet. Except for women, of course. And children. And criminals. And slaves. And stupid people. And people of foreign extraction. And people disapproved of for, er, various reasons. And lots of other people. But everyone apart from them. It's a very enlightened civilization.
Geography is just physics slowed down, with a couple of trees stuck in it.
You can't trample infidels when you're a tortoise. I mean, all you could do is give them a meaningful look.
Any fool could be a witch with a runic knife, but it took skill to be one with an apple corer.
People look down on stuff like geography and meteorology, and not only because they're standing on one and being soaked by the other. They don't look quite like real science. But geography is only physics slowed down and with a few trees stuck on it, and meteorology is full of excitingly fashionable chaos and complexity. And summer isn't a time. It's a place as well. Summer is a moving creature and likes to go south for the winter.
If you would be pungent, be brief; for it is with words as with sunbeams - the more they are condensed, the deeper they burn.
A statesman who confines himself to popular legislation - or, for the matter of that, a playwright who confines himself to popular plays - is like a blind man's dog who goes wherever the blind man pulls him, on the ground that both of them want to go to the same place.
I was taught you don't tell your secrets to strangers - certainly not secrets that expose error, weakness, failure. My generation, like its predecessors, was taught that since our achievements received little notice or credit from white America, we were not to discuss our faults, lapses, or uncertainties in public.
That prayer has great power which a person makes with all his might. It makes a sour heart sweet, a sad heart merry, a poor heart rich, a foolish heart wise, a timid heart brave, a sick heart well, a blind heart full of sight, a cold heart ardent. It draws down the great God into the little heart; it drives the hungry soul up into the fullness of God; it brings together two lovers, God and the soul, in a wondrous place where they speak much of love.
The arrangement of the words matters, and the arrangement you want can be found in the picture in your mind. The picture dictates the arrangement. The picture dictates whether this will be a sentence with or without clauses, a sentence that ends hard or a dying-fall sentence, long or short, active or passive.
As one studies these preconditions, one becomes saddened by the ease with which human potentiality can be destroyed or repressed, so that a fully-human person can seem like a miracle, so improbable a happening as to be awe-inspiring. And simultaneously one is heartened by the fact that self-actualizing persons do in fact exist, that they are therefore possible, that the gauntlet of dangers can be run, that the finish line can be crossed.
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