The law of equivalent exchange
Alchemy, the ancient mystical art where common substances are transmuted into precious minerals. At least, that's how I first learnt about it, from the books I read in primary school. Alchemy was this pseudoscience, where one could start with a worthless piece of coal, and end up with an ingot of gold. I can't go any further on this topic, without mentioning one of the greatest pieces of fiction, that I've come across. Full Metal Alchemist, a story where two brothers Edward and Alphonse, learn how to do alchemy, and live with the consequences of their actions. Within this mythos, there is a law termed, the law of equivalent exchange. The law states, "Humankind cannot gain anything without first giving something in return. To obtain, something of equal value must be lost. That is Alchemy's First Law of Equivalent Exchange". Philosophically this way of looking at alchemy, really does ground the art into everyday life. Although there are exceptions t...