[enthulhusiastic]

Because our bodies are already peak technology.

I think the 6-million-dollar man thing is a weird goal.

Better to regrow, implant, perhaps supplement.

Full-on replacement isn’t just a “when” but a “why” and a “how do you expect to do better than evolution”.

Titanium is cool! That doesn’t make it better than muscle.

Go for a run if you want a better heart

[perihelions]

- "how do you expect to do better than evolution"

Because our goal is aligned with our actual problem (survival of individual human beings), as opposed to the merely partially-aligned goal of "statistical survival up to reproduction age"? Natural evolution is an unaligned AI, in a sense: powerful, but not helpful.

Eventually humanity will defeat this problem, and we won't even need computational parity with natural evolution to do that. Most of that computation is wasted.

[enthulhusiastic]

Most of the computation is suffering, but not wasted. It still benefits us.

And the computation has to be done even in simulation. Just better to shortcut the suffering.

I think bioengineering is a good goal. I think cyborgs are a bad goal.

[Dylan16807]

It's really easy to come up with a better plan than evolution for lots of things.

If our bodies were peak, we wouldn't need to use hundred(s) of hours of exercise per year to force muscular and cardiovascular improvements, it would just happen. Muscles wouldn't shrink away in an aggressive attempt to conserve calories, especially not regardless of BMI.

[bamboozled]

If our bodies were peak, we wouldn't need to use hundred(s) of hours of exercise per year to force muscular and cardiovascular improvements, it would just happen.

Then what would be the point of living if you had nothing to do but wait for updates? How boring.

Even a self-improving machine is spending time, not exercising but “designing a better version of itself”. Which is an “exercise”.

I hate to say this but I think your comment misunderstands the beauty of life and the challenge behind the struggle to improve. It is a blessed journey.

I personally think being fallable and not having full control of my destiny, while scary, is a feature and not a bug. It seems to make existence exciting.

[kaba0]

I mean, no, the human heart is absolutely not “peak technology”, not even peak of what is possible in nature (birds have us beaten), but none of these hold a candle to, say, a turbine.

The main issue here is the combination of biological tissue/conditions and artificial ones without either giving out.

[dylan604]

You can do plenty of other things good for your heart that is much less damaging to the rest of the body. Running is horrible for joints. Just walking at a brisk pace will get the heart pumping. If we want people to get more active, there are much better things to suggest that go for a run. I ran long distance all through school, and refuse to run for running's sake. Playing soccer is the only running I will do, but at least there's a purpose. Walking, swimming, riding a bike, spin class, whatever are much easier suggestions for couch potatoes to start with