I just got to thinking it's been about 25 years since smoking restrictions first got started, in public places, work sites, restaurants, pubs, hotel rooms, public conveyances etc. I think 25 years is ample time to detect a reduction in diseases like emphysema, bronchitis, C.O.P.D., heart disease, cancer etc. Is there anything published on how the rates have changed? If smoking is as dangerous as is made out then the decline must be obvious by now!