why we invented new spells at all? Uuuuuuuuh...Jonas didn't even know that there were new spells still being invented. With that in mind, he bit his lip trying to think of a logical explanation....uuuuuuh.
"Maybe cos' there is a better way of doing things? Like why muggles would invent new technology instead of sticking with the stuff they already have?" Jonas offered as he raised his hand. Hopefully that was an acceptable response.