Someone is wrong on the internet

from http://www.xkcd.com

I came across an interesting linguistic analysis of the wording of this familiar cartoon - starting with whether or not the word order is wrong, then moving from there to why it's not just right but also funny, which he reckons is to do with the difference in meaning between "wrong" in "something is wrong" and "wrong" in "someone is wrong". Interesting, I thought.

But the bit I really loved was where he says: "someone is pretty much always wrong. This is normally not something that has to be put right before you can rest easy."

So simple, so profound, so true - and not just when it's on the internet.