Thanks for all of your answers, that makes more sense about the "invisibility" and glamour spell. I guess from our perception, invisibility spell makes no different to us since we couldn't really tell any difference. But to the outside world, it does alter their perception about the world, which I found it is still cool. I'm still interested into this kinda magic, since it would comes in handy sometimes, such as your in your funny story about donuts, Kassandra.
