I want to know the answer to the following question:
What paradox did Sheptycki point out?
All the background I'm provided with is that "Studies of this kind outside of Europe are even rarer, so it is difficult to make generalizations, but one small-scale study that compared transnational police information and intelligence sharing practices at specific cross-border locations in North America and Europe confirmed that low visibility of police information and intelligence sharing was a common feature (Alain, 2001).". Is that enough to answer the question?