You're probably getting downvotes for how you said it, and that you provided no explanation for what you said. A phrasing that would not clash with HN culture:

You're probably getting downvotes for how you said it, and that you provided no explanation for what you said. A phrasing that would not clash with HN culture: "If you are a computational scientist who is using random() for any part of your simulation, you are making an enormous mistake."