Echoing this, I particularly hate when I see coding schools advertise that one of their 3-week graduates "created a Facebook clone" because really they created

Echoing this, I particularly hate when I see coding schools advertise that one of their 3-week graduates "created a Facebook clone" because really they created a clone of Facebook when it was 3-weeks old. Of course, when you speak with them and talk about, say, Facebook's contributions to the algorithms that handle version control in Mercurial, they had no idea about how complex things are at the 1 billion MAU scale.