Not to forget that almost all economic impact assesments are of dubious benefit to start with.
Love the quote from this article
http://www.macleans.ca/economy/econo...-sounds-leach/
"The fact that the technique we use to evaluate the benefits of spending in general only makes sense when we
know the spending is beneficial should raise more than a few flags.Economic impact analysis is a wonderful tool for confirming your pre-existing biases and for justifying anything. "
Of course the problem is the article is great for confirming my pre-existing bias that the city should not be paying for a new arena.