LDD

A mystery, indeed. Now, of which of the multitude of claims are you speaking?

Might I suggest

"Halo Effect : Bias created by an observer's tendency to rate, perhaps unintentionally, certain objects or persons in a manner that reflects what was previously anticipated."

Rex: My first email in this thread sorta explains the why we can't answer your question. We only have speculation from our use of LDD. The only thing I can claim with certainty is that it works for me. Never mind the scoffers, try it yourself. If it doesn't work, you just haven't done something right!