Imaro
Legend
I don't understand how you are using the notion of "character concept".
I think I made it pretty clear in my post what I mean - that the meaning of the characer's actions can change (quite fundamentally) if it turns out that their relationships differed from what they thought they were. And I pointed to some well-known examples from literature and film. If you don't regard meaning in that sense as a component of RPGing, then your position makes sense, but you're approaching RPGing in a completely different fashion from how I do.
But your examples are the audience analyzing and gaining meaning from a 3rd person perspective that knows everything happening. What I'm saying is if those reveals don't take place during actual play and the character doesn't know about them until the campaign ends...then they have no affect on your concept or how you played it.