You are correct. I only read up on the 'impact' part of the study's claim, not the 'lower cost' part. I thought you were talking about the impact part. The co

You are correct. I only read up on the 'impact' part of the study's claim, not the 'lower cost' part. I thought you were talking about the impact part. The cost part is obviously suspect, for the reason you stated. It is so obviously suspect that I had subconsciously 'tuned it out'!