Here’s the thing. Suppose you introduce a change X to your workplace, and then business improves noticably. That doesn’t mean X caused the business to improve. Well, MAYBE it did. Or perhaps business improved for other reasons, and X was actually detrimental, and business would have improved even more without it. So did things work out well because of the great X, or despite the lousy X? You’ll never know, unless you could rewind the clock and play out the same scenario without X. Correlation doesn’t imply causation.
So people like me who work with organizational change, we are in the business of pseudo-science. We get customer feedback and anecdotal evidence, but we can’t actually prove that we are doing any good, it’s just opinions and observations and guesswork. I think that’s fine, but let’s be honest about it 🙂