For some reason you left off the next sentence of my quote where I said "I don't think you actually believe that" and you are ignoring the "almost implies" part of the statement. C'mon George!
Your guess would be wrong. I did look at the material you sent. Some of it was interesting, and as you pointed out in the e-mail, a lot of it was in "legaleeze" which makes it challenging to read and absorb. Past the point you made in the e-mail which was "there is a lot more to clean air than dust collectors" (that point came through loud and clear) the material wasn't very useful for a hobbyist wood worker and it did not answer the question of what is needed and adequate for a hobbyist woodworker. I work in the semiconductor industry. Semiconductors are manufactured in clean rooms. I'm sure protecting the workers is part of the motivation for clean rooms, but the dominant reason for clean rooms in this application is the fact that contaminants in the air will have a strong impact on the products that are being manufactured. Right away there is a big disconnect between that application and hobbyist woodworking.
I think that is a big one that many of us are guilty of. We put in a good dust collector and an air filter, we don't see dust everywhere anymore and we then start believing that we don't have to wear a respirator anymore. Much of the discussion that you seem to rage against is generally about what the best practices actually are.
