I was thinking of it as a way of protecting against design flaws. Similarly, I think -- and Ed Snowden recently said the same thing -- that for max security one

I was thinking of it as a way of protecting against design flaws. Similarly, I think -- and Ed Snowden recently said the same thing -- that for max security one should wrap things in a sequence of different kinds of cryptography. And by the way, not all parts have to be individually robust.