Concepts without context are merely jargon. It's not apparent from your words that you are referencing the pre-exisiting idea of top-down/bottom-up, and thus read as your own personal slang.
People probably gloss right over it while reading unless they're personally familiar with the practice, but still have to post to HN for clarification (hint hint).
Nope. It could just as easily been lucky word usage letting him play it off ("of course I was using it that way!") as much as being decontextualized jargon ("of course I was using it that way!").
