Smudger,
I think PJ2 is pointing out that if a thread reader is discerning, relevant information, such as it is, is still here.
Even if he isn't, I am!
Of course, there is no magic formula to turn one into a discerning thread reader. Although I believe there is a relatively simple formula to turn one into a relatively discerning thread contributor: check out all the available information, miss nothing, compare with what you already know, and tell!