I am not sure why learned members of HN don't get sarcasm.

But anecdotally Trudeau was worried about carbon footprints from a camp fire he once attended, but these wildfires don't bother him.

Poe's law.

I've seen far too many (AFAICT) absolutely sincerely intended idiotic statements here. I mostly simply let them fly. xkcd 386 only gets you so far.

Adding a </s> tag to your comment helps.

I don't think </s> is necessary one your rely on his/her own human intelligence.

Evidence suggests otherwise. Which is precisely what Poe's Law is about.

because you can't trust assuming sarcasm on this site.

People come to HN to feel smart, and to discuss things that make them feel smart. Things nobody else in their house understands, like JSON and Node.js and jQuery.

They don't feel smart when they can't tell if you're being facetious or literal.

It's pervasive aspergers. Generally people don't appreciate humour here, which is sad, but for the reason above, that many here find conversational implicature hard, and prefer clear, logical steps.