Originally Posted by bhtooefr
When emissions standards are based on pseudoscience, they may have gone too far. (See: the weekend effect, and studies of the effects of very high particle mass but with low particle count (what diesels put out) versus low particle mass but with very high particle count (what gassers put out).)
This isn't clear to me. Are you saying that the weekend effect study is pseudoscience, or that it counters pseudoscience?