Why is distant healing so hard to prove?

That distant or nonlocal healing works is a stretch for a lot of people. And apparently, it’s tricky to prove clinical effectiveness. Yet I know it can be effective, because I see it work all the time in my own practice.

If you like keeping up on the topic, check out this article, available from Consciousness and Healing Initiative (CHI): Distant Healing Intention Therapies: An Overview of the Scientific Evidence.