1
" As humans, we have invented lots of useful kinds of lie. As well as lies-to-children ('as much as they can understand') there are lies-to-bosses ('as much as they need to know') lies-to-patients ('they won't worry about what they don't know') and, for all sorts of reasons, lies-to-ourselves. Lies-to-children is simply a prevalent and necessary kind of lie. Universities are very familiar with bright, qualified school-leavers who arrive and then go into shock on finding that biology or physics isn't quite what they've been taught so far. 'Yes, but you needed to understand that,' they are told, 'so that now we can tell you why it isn't exactly true.' Discworld teachers know this, and use it to demonstrate why universities are truly storehouses of knowledge: students arrive from school confident that they know very nearly everything, and they leave years later certain that they know practically nothing. Where did the knowledge go in the meantime? Into the university, of course, where it is carefully dried and stored. "
― Terry Pratchett , The Science of Discworld (The Science of Discworld, #1)
20
" Is the solar system stable?’, which means ‘Could it change dramatically as a result of some tiny disturbance?’ In 1887 King Oscar II of Sweden offered a prize of 2,500 crowns for the answer. It took about a century for the world’s mathematicians to come up with a definite answer: ‘Maybe’. (It was a good answer, but they didn’t get paid. The prize had already been awarded to someone who didn’t get the answer and whose prizewinning article had a big mistake right at the most interesting part. But when he put it right, at his own expense, he invented Chaos Theory and paved the way for the ‘maybe’. Sometimes, the best answer is a more interesting question.) The point here is that stability is not about what a system is actually doing: it is about how the system would change if you disturbed it. Stability, by definition, deals with ‘what if?’. Because a lot of science is really about this non-existent world of thought experiments, our understanding of science must concern itself with worlds of the imagination as well as with worlds of reality. Imagination, rather than mere intelligence, is the truly human quality. "
― Terry Pratchett , The Science of Discworld (The Science of Discworld, #1)
