Boing! said Zebedee , you say When working on article content, what individual editors "know" is largely irrelevant - it's only what they can reference to reliable sources that counts (see WP:RS). And when there is a disagreement about the reliability of sources, it should be solved by discussion and consensus on the relevant Talk page, not by arguing about which editor "knows" best.....Disappointing that my conciliatory response to Sitush in spite of his name calling misses your attention .
Sitush calls me a wind up merchant , on my talk page ,.....which article page is he discussing other than me ? 
There are ample talk pages on record where I have discussed content instead of deletions/or edit warring  , which specific article or talk page are you referring to where I have not properly discussed reliability of sources with Sitush. 
Considering the absence of your mentioning a specific circumstance of incident on a page or talk page your advice is extraneous and erroneous , in fact am surprised as an admin you dident find Sitush name calling comment "personal accusation" .Your comment here is is inequitable .