I remember this discussion from a few months ago and a few years ago...The only problem we seem to have is how to actually test??? And what do we keep records of?? On my daily site I have been doing stress levels as you might know from being a long time reader...but what the heck do I do with those stats I save? Science doesn't seem interested and that is because I don't follow the scientific rules...But neither did Jack Coles...and he had at least one option to allow Andy Michaels etal into his home....