I was hoping this discussion could avoid the obvious folly of absolutes...

I'm aware there is no such thing as 100% guaranteed... I'm looking for a reasonable level of assurance-- ie, more than is apparent now.

I am really frustrated though by how this is going so far, so maybe I really should shut up. I can see by thanks and responses that either I'm not communicating well or what I'm trying to discuss is seen as a bad idea from the outset...