This sounds counter-productive (the author calls it an oxymoron), and yet, there is such a thing as positive conflict.

Where there are scarce resources, differing priorities, or simply differing opinions, it's possible to work through the challenge and come out on the other side better for it.

Conflict is healthy when the outcome makes for a better organization or for better relationships. The key, for me, is not taking it personally. It's possible to have conflict with someone and still be able to work with them, and respect them the next time. Give it a try.