Magic in the Darkness Series

Magic in the Darkness series cannot be manufactured but rather used by mages. The mages of Derlavai gather magical power from various power points scattered on the planet and the "ley lines" that link them. Magic can also be gathered by sacrificing human lives. The operation of magic is heavily reliant of location. As such, many cities and town are located near major power spots which provide the energy for the operation of the city's lighting, heating and other comforts. In addition, large power points tend to be linked to greater numbers of ley lines, which are utilised for transportation between cities and towns.

Mages
There are fundamental laws of magic, which require intense studying to master in order to become a mage. Though popular "how-to" books for the general public do exist, the spells published in them are not always reliable, and can backfire in dangerous or embarrassing ways. Professional mages are divided into "theoretical" and "practical." Theoretical mages research the relationships and underlying laws governing the behaviour of matter and energy, formulate hypotheses expressed in complicated mathematical formulas, and devise careful experiments in order to prove or disprove these hypotheses empirically. Practical mages use the theories devised by theoretical mages to make devices that can be used by the general public.

Magic and Technology
Derlavai has gone through a "Thaumaturgical Revolution", using magic as the basis for much of its technology. Because of magic, there appears to be less of a need for mass industry. There are plants producing pottery, for example, in large amounts, but behemoths and dragons are bred on farms and clothing appears to be made by tailors instead of in factories. On the civilian scene, magic is much less important, being limited to applications such as rest boxes (an analogue to the refrigerator which operates by slowing the effects of time on its contents), lighting (in places where such sorcerous power is available) and ley line ships, while in the military magic is involved in the production and use of almost all their weapons and supplies. Most of the magical items in the world of Derlavai are analogues to everyday, or military, devices in our world. While the series is more concerned with military affairs than with economic ones, it seems that there are three competing ways of producing things: By direct magic, using the law of similarity which can obviously be applied to mass production. This method is fast, but can produce inferior goods if not conducted with skill and effort. By artisans, who work by hand and use a limited amount of magic. Each profession has some spells, and the knowledge and use of them is considered a normal part of that trade rather than a form of magecraft. Mass production by machines, as in our world. There is a mention of the Kuusamans rapidly building a new port in a newly-conquered island by magic, which is evident from all buildings being the same (indicating that the spells made extensive use of the law of similarity). It is noted that only a country with many skilled mages could have spared the resources for such construction. In another place it is noted that printing is usually done by mechanical means, but the Valmieren resistance utilises magic for reproducing a propaganda sheet in order to avoid detection by the occupying authorities. The result of this magical duplication is readable, but the ink smudges easily as it was produced without the aid of a power point or an experienced mage.