Originally Posted by Tom Hoskinson
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)
So what? The procedures are valid for the kind of testing this is.