I'd generally prefer discussion on Hacker News was kept civil. If the parent had a reputable source for their assertion, I'd be interesting to see it. A lack of

I'd generally prefer discussion on Hacker News was kept civil. If the parent had a reputable source for their assertion, I'd be interesting to see it. A lack of a source is also interesting. Either way, asking for a source is better than just saying 'I don't believe you'.