He also recently used "orthogonal" in an essay when it really wasn't the best word choice. When given the option to maximize eloquence, the author favors impressing the reader with his technical know-how, sacrificing being articulate for upping his nerd cred. Possibly a smart move for communicating with the HN community and securing his status as leader. A political thing. I often find myself talking more nerdy than I need to in #startups, for example.