For the geeks out there 

And when the picture is awfully distorted compared to the original? 

I don’t get it. Is that referencing some song one is supposed to know? I am terribly bad with pop culture references … 
Why would anyone know something like that? 
Now you’re delving into philosophy. That’s a different xkcd comic.
If you’re old enough (
), you just remember that song. it was very popular.
When I read the cartoon immediately this melody popped up in my mind, even being not so familiar with this song. Magical. 
I hope @agriggio doesn’t mind, but I added the non-scaled version of the image to his first post (and will be investigating why it’s distorted).
[edit] - this has been reported upstream to be fixed - thanks for the link! 
@patdavid no problem at all! thanks!
And if you go to football games in the UK you’ll hear it sung by fans (with altered lyrics) - made me smile!