But it all started with the idea of magic, and laws, which the understanding of mixing one chemical with another and its properties would therefore change and so on. They realized there were laws when the same experiment with the right quantities of the same things could be repeated over and over again, fixed laws.
Waligundua kuna sheria kama ozoefu sawa na wingi unaofaa wa vitu sawa inaweza kufanya tena na tena, sheria mbazo hazibadiliki.