Postcards from after the invention of time travel

[Gpa]

Nicolas;

I appreciate your interest in this subject which is why, I tried to "nicely" point out, that you might reexamine your position, instead of seeming too critical by just pointing out errors.

Look more closely at the chart in the first link (fig 2). Notice the O2 and CO2 levels.

And this section

Mid-late Devonian atmosphere, climates, and environments

"Generally speaking, the levels of CO2 are estimated to have been higher than present levels throughout the Devonian, dropping from about 0.35% in the Early and Middle Devonian to about 0.3% by the end of the Famennian."

"Present atmospheric levels of 0.03% were reached by the mid-Carboniferous (late Mississippian)"

http://icb.oxfordjournals.org/content/47/4/510.full

On a very windy day, with the atmosphere thoroughly mixed, you might survive but be under extreme duress and most likely unable to perform necessary tasks to ensure your survival. You would be best off trying to live in the mountainous areas as elevation, at that time, is your friend. On a calm night, sleeping on the ground under the stars, you would probably die in your sleep from asphyxia. CO2 is heavier than air and would accumulate at ground level to the exclusion of the needed O2.

 

[PaulaJedi]

Lol, thank you for your support @PaulaJedi. I sure do agree with you on that. Things should be lighter all the time!But, I have to admit... I'm always up for a debate on evolution! Such a wonderful subject, I always learn new things when talking about it!

Have a nice day!

Alright, I'll hush and let you two debate! *sets up boxing ring*

View attachment 229

Will this work?

 

[pinterest]

I really don't see why a group of tourists would have any trouble breathing during the Devonian... Would you care to elaborate?

No, not really.I think what struck me was the picture that I have in my mind of very early amphibians coming out of the water.This is very early and I guess I just had a way of pan, meaning extra wide view of looking at issues.
If this is postcards from the future, there could also be the effects of evolution placed on people, such as the foot tall pimp?A stud that's highly concentrated and does twice the work, only in a smaller package.

 

[Nicolas]

Alright, I'll hush and let you two debate! *sets up boxing ring*View attachment 397
Will this work?

Lol, no need for that Paula, just take it lighter!

 

[Nicolas]

Alright, let's get to it before the family wakes up:

Nicolas;I appreciate your interest in this subject which is why, I tried to "nicely" point out, that you might reexamine your position, instead of seeming too critical by just pointing out errors

Don't worry about that sir. I try not to take things personally when exchanging with anonymous people on an internet forum.

"Generally speaking, the levels of CO2 are estimated to have been higher than present levels throughout the Devonian, dropping from about 0.35% in the Early and Middle Devonian to about 0.3% by the end of the Famennian.""Present atmospheric levels of 0.03% were reached by the mid-Carboniferous (late Mississippian)"

Wel I did say "well suited for the modern human" didn't I? Quite a needless exaggeration to make a point... I take it back.

On a very windy day, with the atmosphere thoroughly mixed, you might survive but be under extreme duress and most likely unable to perform necessary tasks to ensure your survival. You would be best off trying to live in the mountainous areas as elevation, at that time, is your friend. On a calm night, sleeping on the ground under the stars, you would probably die in your sleep from asphyxia. CO2 is heavier than air and would accumulate at ground level to the exclusion of the needed O2.

Let's try a different approach: The hypothesis was for a small group of people to hop on a time machine and visit our fish ancestors, take a few pictures, hang out for a few minutes, hours even for the more enthusiastic, and come back home before the sunset. I mean, it's not like there are hotels, or even bathrooms back there...
Would you still say people would die at 3000 ppm of CO2 if that was the scenario? Please don't take that from me, I really wanna go...

 

[PaulaJedi]

Lol, no need for that Paula, just take it lighter!

Yep. I just switched gears. No worries.

 

[Gpa]

Let's try a different approach: The hypothesis was for a small group of people to hop on a time machine and visit our fish ancestors, take a few pictures, hang out for a few minutes, hours even for the more enthusiastic, and come back home before the sunset. I mean, it's not like there are hotels, or even bathrooms back there...

Nicolas;
If you "could" go, the first and most important step would be to send a probe to test the atmosphere. Every good sci-fi TT or space exploration movie does this. The atmospheric conditions in the Devonian period are at best, estimates based on the information available from chemical concentrations in rock from that period. The actual atmosphere could still be far different and, most likely, not in a better way. Everything that existed back then is far different than anything you can compare it to today. Most living things from that period went extinct during the three mass extinctions that occurred over that period. The reasons/causes for these extinctions is still "under construction". I've engaged in these discussions and opinions are many and varied.

Would you still say people would die at 3000 ppm of CO2 if that was the scenario?

I didn't say you might die at 3000 ppm CO2, there are other considerations.

Please don't take that from me, I really wanna go...

Ok, fine but, be back before dark. Who knows what might be crawling around back then. :cautious:

and visit our fish ancestors

Well... it wouldn't be "my" ancestors. I would refer to them as predecessors.
Am I being overly serious about this? :geek:

Perhaps, but this subject is of interest to me and I was just pointing out that a trip to the Devonian period won't be like a Jamaican vacation.

 

[Nicolas]

Nicolas;If you "could" go, the first and most important step would be to send a probe to test the atmosphere. Every good sci-fi TT or space exploration movie does this. The atmospheric conditions in the Devonian period are at best, estimates based on the information available from chemical concentrations in rock from that period. The actual atmosphere could still be far different and, most likely, not in a better way. Everything that existed back then is far different than anything you can compare it to today. Most living things from that period went extinct during the three mass extinctions that occurred over that period. The reasons/causes for these extinctions is still "under construction". I've engaged in these discussions and opinions are many and varied.

Excellent!

Ok, fine but, be back before dark. Who knows what might be crawling around back then. :cautious:

Crawling? Well, I guess I can take a look at everything from inside the time machine...

Well... it wouldn't be "my" ancestors. I would refer to them as predecessors.

What's the difference? :unsure:

Am I being overly serious about this? :geekerhaps, but this subject is of interest to me and I was just pointing out that a trip to the Devonian period won't be like a Jamaican vacation.

Not at all. Who goes to Jamaica anyway?

 

[Gpa]

What's the difference

My Parents, Grandparents, Great-grandparents, etc...are my ancestors. Anything else, that came before me, is simply a predecessor, someone or something that came before. By my meaning.