Guh. I encountered this so much on an investment site that I wrote a blog post about the Law of Large Numbers because it was annoying me enough that I wanted to have a shorthand link. http://confounding.net/2012/03/12/thats-not-how-the-law-of-l...
I equally hated "Well, it means something different in this field." No it doesn't, it's math. That's the whole point.
Much more cringe inducing are all of the invented definitions of the Law of Large Numbers! (e.g. http://www.fastcompany.com/1825592/9-reasons-choose-corporat...).