[throw10920]

I'm 95% sure that the author (who is on HN[1]) is at least referring to the article "There's No Such Thing As A Tree" in his line "There is no such thing as a tree." - regardless of the fact that the article as a whole isn't about trees made of wood.

It's possible that he's additionally making a double entendre about abstract tree structures.

[1] https://news.ycombinator.com/user?id=hwayne

[hwayne]

Yeah, I was thinking about biological trees. In retrospect, I should've gone with "there's no such thing as a fish."

[jerf]

My favorite example is "berry". Everything that you think is a berry isn't botanically a berry... but tomatos and bananas are.

OK... technically it's almost everything you think is a berry isn't. But it sure feels like it's everything.

[simiansays]

Haha yes please! I thought you were talking about literal taxonomic trees.