bjcc
You say you missed John Boeman's point:
You and he may have been at cross-purposes re the difference between unwittingly carrying an item, and knowingly carrying a package but not knowing the contents.
That aside, JB's point was -
You claimed there had been instances where a member of crew had carried something airside when they didn't know the contents.
He challenged your claim, saying "When you hear of a case of this happening with a member of flight crew involved, do let us know."
You responded implying you could give numerous such instances ("Where do you want me to start?"), gave two incidents from your own experience, some unspecified anecdotal evidence from Customs officers, and concluded with a triumphant flourish saying "So, I have let you know. So, as I say, wouldn't happen? It has!"
JB doesn't think you have substantiated your claim.
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IMHO, one of your examples might and the others don't:
If you mean the BA Captain carried a package for a friend even though he didn't know what it contained, then it does.
The second one doesn't. The stewardess knew what the item was - she simply didn't know it was illegal to carry them even for self-defence in the UK. Many people don't. (They are legal in other countries - including some European countries, I think.)
In your Customs stories, the people who carried drugs knew they were doing so.
Your claim may well be correct - I have no idea - but I admit I thought (from the confident way in which you made it) that you were going to come up with some actual examples where flight crew had carried items airside not knowing what they were - or perhaps instances of flight crew unwittingly carrying something because they had been deceived into believing it was something else.