"Sometimes," Jack agreed. "But potions take time sometimes, which could be a drawback." If they were ready-made it was fine, but if they were behind in brewing or there was a large emergency (like dragons in London) everything went quickly. "You've inspired me, I should pick up a book or two and read up." Jack added with a smile. He had been thinking about it anyway, but Mrs. Rowle had provoked some more thought into the subject and he could use more to fill his time at home with Emerson at school.