In this magic land, magic is an art.
Magicians learn to do magic, exactly as it is written down.
They innovate at their peril. Well, Wiz Zumwalt instructs a demon to do the simplest of spells, like moving one molecule of air. Then he has the demon execute an infinite loop. And the demon works so fast that this simple spell becomes a dangerous storm. He invents a compiler, which compiles his code into powerful spells.