Quote Originally Posted by bjorke
THANKS HANS FOR POSTING THIS.

People can argue interpretations all day but it's good that you spent the time to post the reference.
Ah yes, the reference, a possibility of some experimental data. Let's see:

The authors describe this document as a survey, as such, it does not purport to describe a set of controlled experiments and their results. That is good, because the survey has:

No discernable experimental design.
No control samples
No objective standards
Developer dilutions (some are given, some are not)