Okay rather than go back and reply to day old messages I'll just say this.
1. People in this thread talk about evolution, well the human body is the product of millions of years of evolution. We are who we are today because somewhere along the line, it became apparent that the current design of human is a successful one. And over the course of Earth history, no design has been more successful in sheer achievement both technological and material. We are fundamentally a BALANCED design. So how is it, that some humans suddenly get the idea that they can improve one aspect of a human body and suddenly they'll get a better design? Remember nature has been testing this human design over hundreds of thousands of years. What Laboratory can do that quantity and quality of testing? To every fundamental change you make to the human body, there WILL be negative consequences. Remember that people with heightened senses and cognitive abilities already exist in our world, they're called Idiot Savants, and most of them have autism or some other disability. There are a few who do not but I would venture that they are the exception, not the norm. The real question is will these changes, the body improvements result in a fundamentally flawed design, and furthermore can these changes be instead achieved more successfully with the creation of external technology?
2. The idea that someone change the human body, and that the new change will be an optional one is bogus. Take GB's example about a race of super humans who can hibernate at will. Animals don't hibernate at will, they hibernate with the seasons. What PRECEDENCE is there for any real voluntary bodily function? Can you sleep at will? Can you decide not to sleep? Can you decide to stop requiring to go to the bathroom? No, of course not. The only thing we can really do is control our muscles and focus our mind. So what exactly gives anyone the idea that they gift humans with these magical powers and suddenly the laws of nature will no longer apply? And yes, I say magical powers because quite honestly they strike me as high fancy. That's the difference between TOOLs from technology and the human body. Tools can be used at will, discarded at will, the human body cannot. So any human-designed evolution of the human body will be technological, not biological. Sure if people want they can enhance their bodies with cybernetic implants but then you're not an enhanced human, you're just a cyborg.
3. As I said to E via PM, I am not opposed to the elimination of diseases such as cancer, or the augmentation of the human body with false hips and so forth to make up for the failings of that body. Essentially I believe there is a "human standard", and no I don't mean some Aryan Nazi bull****, just a very rough baseline of what is a healthy human body. And any medical advances created to bring individuals up to that standard is fine. Glasses, hearing aids, crutches, etcetera. If someone can help spinal paralysis walk again, cool. That's fine. But anything beyond that human standard, no. Because as I said the human is a balanced, successful design, why go unbalancing the design when you can use tool-based technology instead? And on this same topic:
4. Death is not a disease. It's a fact of reality. And yes E I should go read Culture by some guy but I'm not at a library. Immortality is a very dangerous game, as it stands in the current world the only real immortality humans have is their offspring. What will immortality do to the birth rate? I think it very likely that the human race will suddenly stagnate and cease development until all immortals die out through accident or disease and the human race as we know it ceases to exist. All of these questions also ignore the fact that a suddenly immortal world would have devastating consequences to the economy. If the death rate disappears the population will explode and in all likelihood the world economy would collapse as a result. And just because a person is immortal doesn't mean it will significantly change their lives in any event.