Something that I've been thinking lately (motivated by the simple explanations given in crystallography, which I interpret as a complex phenomenon),
are there any references (books, papers) that would try to shine some light onto the philosophical question of:
why does nature seem to follow so simple human-conceived patterns?
By simple patterns one can think of e.g. trigonometry.
Obviously not interested in pseudoscience or religions, but rational and scientific explanations/speculations.