Proper standards of evidence and referencing

I think it really depends on the context.Since Jerry claims to be doing science, and is prepared to make clams about what is or is not in the scientific literature it is reasonable to expect him to be aware of the relevant papers - especially on simple issues like the ones discussed - before being supplied with references.If dealing with a non-scientist who says something on the lines of "I don't know of evidence for..." or "is there evidence for...?" then I suggest that quotes should be produced where practical, even though their value is limited where the paper itself is not conveniently available.