"Oh, certainly," he agreed easily. "That man who invented floo powder never did a single noteworthy thing in the rest of his life." For all that Oz had agreed that the quality was more important than quantity, this last was said with an undercurrent of derision. He invented things because he didn't know what to do with all his free time otherwise, so it struck him as singularly odd that someone might invent one thing and just — stop. Unless they had died immediately afterwards. "And his family is set for the rest of time, financially."

Oz had never patented anything that had brought in a noteworthy income, but at least a third of that was probably down to marketing; he simply didn't do any, and could barely be bothered to expend any effort at all into getting his inventions into the hands of other people. He did sometimes make money from the things he created, but never anything that made a significant difference compared to the wealth he already possessed as heir to the Dempsey estate.

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