"Well, perhaps I should explain in more detail. In my dimension, there are three basic "types" of humans. There are the "Standards," base humans that have less than twenty five cybernetic augmentation by body mass not counting the networking and communication mods necessary to live in our society comfortably. This group also includes individuals who reject modern cybernetics for religious or personal reasons, and those who primarily rely on gene-splicing for their augmentations. Next you've got the "Cybers." These are individuals who contain more than twenty five percent cybernetics by body mass. This can range anywhere from a couple replacement or extra limbs, to what we call full conversion, where all that's left of the original human is a brain and spinal nerves encased in a synthetic body. And finally there's my group, "Technos," short for "Technological Organisms." We start our lives as nothing more than data imprints from our parents, and upon reaching mental maturity are able to choose the body type, or morph, our core will inhabit. We can choose a different morph later in life but it's a bit of a process. Now, to be clear, there's no legal difference between the three types. No one is "more human" than another. The difference is more for safety classification and design specification. As you pointed out, Technos are a lot less squishy than Standards.
As for the whole death issue. With the help of the Think Tanks, massive, immobile, city district sized Technos that are essentially huge sapient supercomputers, we discovered how to imprint a person's mind into a data storage system. All the thoughts, memories, hopes, and dreams that make you... you, stored on a backup. If a person dies, we can upload their latest backup into a mind specifically built or grown to match that person's neural pathways. Granted most people don't see it as true immortality, mostly because the isn't continuity in the stream of consciousness, but the knowledge that you will continue to live on, even if it's not you specifically, bring a great deal of comfort to most people."
As the group reaches their destination, Drake looks over towards Toasty, and with a sense of gravitas concludes. "Since our very beginning, humans have looked for ways to stave off death just a little longer. We are slowly discovering the pieces of the puzzle and we are getting close to the end. One day soon, we will finally solve the secret of true immortality, and our most ancient enemy will finally be destroyed."