It's great that you're concerned about civility on HN, and believe me I sympathize with the condition of not remembering things one has a degree in. But I'm afraid you misread aroberge—who was trying to reassure the reader that they needn't assume graduate physics—and unfortunately your reply crosses into incivility itself.

We detached this subthread from https://news.ycombinator.com/item?id=11067987 and marked it off-topic.