I think that the analysis is a little more involved than that. Roughly, I'd say that at any given point you can make "trivial" tradeoffs between security and co

I think that the analysis is a little more involved than that. Roughly, I'd say that at any given point you can make "trivial" tradeoffs between security and convenience. However there can be some groundbreaking advances in one that don't cost you on the other. And then that point you may be able to do a "trivial" rebalance if you'd like.