““Normally, you exist at a scale where your body consists of a thousand trillion trillion atoms in an assembly ten billion times larger than a single atom. And you move around quickly, at meters per second. Any diffraction in passing from one scale to the next smaller power of ten has been beyond your perception, or that of any current measurement device. But now, at this tiny scale of a tenth of a billion of a meter, you can't waltz through a doorway between magnitudes and hope to be just fine. The particle-wave duality of matter-the deeper truth of reality- is in full force. On these scales the universe is a place of probabilities, of statistics, a dance of a multitude of branching pathways and curious relationships. That weirdness is at the heart of reality-it is what lets us exist.””
![“Geometry, which should only obey Physics, when united with it sometimes commands it. If it happens that the question which we wish to examine is too complicated for all the elements to be able to enter into the analytical comparison we wish to make, we separate the more inconvenient [elements], we…” quote by Jean le Rond d'Alembert](https://sms4smile.com/quotes/img-quotes/0d9/jean-le-rond-d-alembert-26487_able_geometry-which-should-only-obey-physics_6945.jpg)
