Simon had spent the majority of the class listening to others. Today, he was rather tired and spent most of his time staring off into space. Despite this, the boy was managing still to take notes. Notes were important. Without them, he'd probably would be lost.

Why was it important to use the disillusionment charm on a Hippogriff?

Well muggles seemed like the simplest answer so he went with that. He raised his hand. "Using a disillusionment charm on a Hippogriff would stop plenty of muggles having heart attacks. Imagine if you were a muggle and saw a Hippogriff, you wouldn't know what to do."