That's what made me drop research into NoSQL a couple of years ago- the overly optimistic and magical thinking seemed to be really pervasive. I don't want to get burned from joining in a group delusion. (I'm not trying to say that's what's going on specifically in Mongo or anything else, just acknowledging that the mythos phenomenon mentioned above can repel me.) Since you've coined the term, are there any NoSQL projects you've seen that don't suffer from the mythos issue?