It's ecology in a really large national park. You don't get to do much controlling there.

I'm sure he meant his comment with a little tongue and cheek. I believe the point is, don't assume that the conclusions drawn in this article are accurate. Do a little cursory "googling" and you'll find quite a few articles warning caution or full rebuttals of the thesis in this video. Here's one link http://elyfieldnaturalists.wordpress.com/2014/02/27/do-wolve...