In a world of magic where spells are not based on fire, water, air, and earth; rather, the electromagnetic force, the gravitational force, the strong nuclear force, and the weak nuclear force—How do things work?
I am aware that this is an incredibly broad question and one that has been asked many times before, but I feel that the room for creative thought is tremendous and I believe we'd all benefit from each other's interpretations.
Okay, okay, too broad. I'm sorry. To explain what I mean by magic and what causes it to exist, magic in this context can be defined as a (fictional) ability of human intent and perception to drastically alter probability of natural processes at the level of those fundamental forces, up to the extent of creating macroscopic phenomena that should not logically be possible in our world.