I can understand redundancy when it comes to the essentials. If your backup is lite and small enough then why not carry it. Its just that a person doesn't need to have redundancy for everything or carry a lot of extra weight. DC always gets my motor running when he advocates "bomb proof" equipment. A lot of that bomb proof equipment is heavy and not practical. Some lite weight redundancy could be applied and still be lighter than his packs.

But then again, it seems like everyone out there has got some sort of slogan or catch phrase to grab people's attention or to provide a signature.

DC uses the "2 is 1, 1 is none". I've also heard "The more you know, the less you carry" and "If you're not always prepared, you're never prepared", etc.