|
There are practical reasons for current skepticism toward breakthroughs. If you work with industrial chemicals over the past 20+ years you've seen the government's safe limits (e.g. Threshold Limit Values and/or Permissible Exposure Levels) change radically for some materials. Same situation for various types of radiation, no more fluoroscopes for fitting shoes in stores or radium watch dials (give me tritium-powered phosphor please!).
Heck, even today nobody can tell us the safe limits or handling for many nanomaterials. There may (I say will) be new health issues arising from carbon nanotube and nanofibers in increasingly common use today. That class of ingredient is going to be tomorrow's asbestos.
Last edited by Penforhire; 05-30-2011 at 10:10 PM.
|