I just posted a link to the above paper in a comment here:

https://news.ycombinator.com/item?id=7496154

But it's such a good article, that I think it warrants reconsideration given the "Abstract Ideas Don’t Deserve Patents" article in the New York Times (linked in that above comment thread).

This paper really changed my mind on the notion of IP. And if you've got a view on the subject, it's worth reading.