On 01/06/2015 17:39, Wouter van Ooijen wrote: >> But seriously I would be grateful if someone could give me a concrete=20 >> explanation why maths is real and not just a figmant of my imagination. > Math is not real.=20 This is a 3000 years debate! http://en.wikipedia.org/wiki/Reality* > Philosophers, mathematicians, and other ancient and modern thinkers, such= as > Aristotle, Plato, Frege, Wittgenstein, and Russell, have made a distincti= on > between thought corresponding to reality, coherent abstractions (thoughts= of > things that are imaginable but not real), and that which cannot even be > rationally thought. By contrast existence is often restricted solely to t= hat > which has physical existence or has a direct basis in it in the way that > thoughts do in the brain. Nicola * --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .