Earlier quoted context omitted.
> Do you know that more women are raped every year in UK & US than in India? No, but I do know you don't understand reporting and statistics. The UK has had massive reforms between the 1980s and now. Police are required, by law, to record every single accusation of rape irrespective of if it results in a prosecution or even an attempted prosecution. That has resulted in the UK's "rate of rape" going through the roof,…
> No, but I do know you don't understand reporting and statistics No personal attacks on HN, please. This comment has a good argument. Abrasiveness tarnishes it.
If someone said "the moon is made of cheese" and someone replies "you don't understand what the moon is made of" that isn't a person attack, since it was directed at their argument not their character.
If I had called them names, broadly questioned their intelligence, accused them of bias, and so on those are all personal attacks. Poking their argument with "you don't understand the topic" is none of the above and not even in the same ballpark.