One billion A.D. A question for evolution fans.

[leo-rcc]

Well if you pick the time around the plague, the life expectancy is 25 years, but that is to be considered an anomaly. It might very well be that previous to greek and roman time the life expectancy is lower, but I have no data on that. I do know that a lot of people tend to think that the middle ages had a very low life expectancy which is not really the case if you exclude the epidemics.

London still had the plague till 1666 of course so it was for centuries a big problem but not as much as between 1300-1400.

[Edwardo Piet]

Well what I heard is before any medicine at all was invented. Average expectancy was apparently 25.

[leo-rcc]

Even early stone age men must have figured out that some plants help to reduce fever, or help stop bleeding, just as some native tribes in the Amazon and Africa still do today. That is also some form of medicine. So I would contend that "before medicine was invented" is not a legitimate timeframe, unless you define what time "before medicine was invented" is. It might well be that for cavemen or similar humans the life expectancy was 25, I don't know.

The problem with averages like that is that infant deaths count as 0 or 1, that of course lowers the averages with high infant mortality rates.

[Edwardo Piet]

I just checked it isn't the "atheist" video so it must have been another video then. I'm not sure if Harris said something on the subject. I think Hitchens said that in stone age times it was like 20 or something. I think. And I'm not sure if thats reliable or not, he has been known to get his facts wrong (apparently).
Maybe it was "modern medicine" when did that start?
Most of this (if not all) is speculation, so I'll try and look into it.

[leo-rcc]

[Edwardo Piet]

Yes lol its an average. I found it on an atheist youtube statistics video that I can't find now (could've been deleted because it was wrong of course). Because the thing is I have looked and I know now that its not the famous "Atheist" video it was another one.
I think Sam Harris might have mentioned the same or a similar statistic. But I'm not sure, I could've (perhaps easily) imagined that. I'm not sure.
I think Hitchens said that IN STONE AGE TIMES, average was about 20 years (or perhaps he said, most died at about 20 I'm not sure which). Mostly dying because of problems with the teeth, teeth and gum disease etc.
And yes, if it IS 25 that is on average of course. Everyone didn't just die at 25!

[LukeMC]

Maybe we could evolve eyes at the backs of our heads? How amazing would that be. I can't even conceptualise the mental experience of that
Or evolve some sort of bypass in our throats so we don't choke. From what Dr Wickham has discussed with me, the reason we choke is because of the way our voice box developped, and other animals don't have this problem because their nasal pasage connects lower down the throat? I may be completellllllly wrong here

There are alot of creatures capable of processing an image from light-sensetive patches on their faces (called eyes), could the same be done for different waves? Ultra Violet images? X-ray images? Infra-red? Perhaps one eye could be light sensetive, and the other be UV sensetive? That'd create an awesome picture surely?

[Purple Rabbit]

[Edwardo Piet]

You see if I try to be realistic I can't think of anything because I couldn't know. I couldn't even think of a slightly likely possibility because I have no idea.
Is it ok to just make anything up for speculation? Or does it have to be somewhat realistic/believable?
I mean I could just say something like: Perhaps our hearts will evolve to develop intelligence like the brain somehow and the brain will also become more heart like so human brains will also be a big heart and human hearts will also be a big brain. So they'll have like a brain and a heart in the chest and a brain and a heart in the head. Totally ridiculous idea really!
And of course I don't see how that would make any sense whatsoever! But if its just imagination! I can't think of anything believable.
I have no idea really.
I'm just speculating weirdness here.

[Dotard]