"Jon Woellhaf" wrote in message
news:lLzlb.855556$uu5.153335@sccrnsc04...
I think the problem is that some very influential people believe that only
cleanroom pure air and reagent grade water is acceptable.


Because they don't have to pay the bill themselves, or they are bureaucrats
who achieve more power/funding/influence by pushing the impossible via
hysterics and crisis-mongering.