Provide an economic analysis of what is wrong with the attachment article .

this is the article also I attachment.
http://www.bbc.com/news/uk-politics-eu-referendum-36574526

” It is very common for writers to focus on the benefits of what they support and the costs of what they oppose, rather than the costs and benefits of both what they support and what they oppose. This is referred to as the Nirvana Fallacy”.