"If I were stuck in a school, I'd go insane and take them with me," Bob declared.

"As to magic," he shrugged, "it's difficult to work in specifics, with each world being so different. I've tried for the most part to cover the basics - what it looks like, how it functions, how to recognise it and disrupt it if needed. And how not to be terrified by or overestimate it. So many students don't even know it exists; it's shocking."