2 ms·
>I'm pretty sure there ain't nothing you can do about this. Why not? Because evolution built it pretty strongly into our genes. Here's how I see it: if an organ
by scythe 11y ago
>I'm pretty sure there ain't nothing you can do about this. Why not? Because evolution built it pretty strongly into our genes. Here's how I see it: if an organism arose which had this "death gene" turned off, it would not adapt to sudden changes in the environment. It might be susceptible to a novel infectious agent which wipes out the whole species. Thus evolution tends to weed out immortal or very long-lived organisms.
Your prediction is right, but you've expressed the conclusion wrong: thus long-lived organisms are unlikely to persist, i.e. removing a single "death gene" only allows you to experience one of the many other forms of death. The species is never at risk because any potential cause of death is always present.
I believe that the current hypothesis is essentially that evolution does not need you around longer than it takes to produce and raise healthy offspring, and furthermore, it does not need you to reproduce beyond prime years when your offspring are likely to be healthiest. So genes having these effects are not selected for; furthermore because most genes have side-effects (e.g. sickle-cell anemia), they are likely selected against.
>Look at this scary graph (with a logarithmic y axis!):
>https://en.wikipedia.org/wiki/Gompertz%E2%80%93Makeham_law_o.. https://en.wikipedia.org/wiki/Gompertz%E2%80%93Makeham_law_o....
>and then tell me that medical advances will do anything to make you live to 200
I wouldn't be surprised if we reach 150. "Medical advances" is a broadly-defined category. Indefinite extension is rather unlikely in the foreseeable future, though.
- alejohausner 11y ago> removing a single "death gene" only allows you to experience one of the many other forms of death I see your point. On the other hand, why are there so many ways to die when you grow old? If one form of death doesn't get you, whey are there so many built-in mechanisms for death, in each of us? Why does your body betray you without fail, eventually? Why do mayflies die so young, just after they reproduce? Perhaps evolution has no need of them after they reproduce, but that's not how it looks like to me, in the case of mayflies. It is one thing to say that there is no advantage to living after reproduction, and another to say that you MUST die after reproduction. It is perfectly conceivable to imagine post-reproductive mayflies surviving for many years. Heck, post-reproductive humans survive again as long after the end of fertility. > Indefinite extension is rather unlikely in the foreseeable future, though I agree with you there. That was pretty much my point all along. And I was trying to put forth a rational argument for WHY I think that, but I can't come up with a totally convincing explanation.