Register | Sign In


Understanding through Discussion


EvC Forum active members: 66 (9164 total)
7 online now:
Newest Member: ChatGPT
Post Volume: Total: 916,468 Year: 3,725/9,624 Month: 596/974 Week: 209/276 Day: 49/34 Hour: 0/5


Thread  Details

Email This Thread
Newer Topic | Older Topic
  
Author Topic:   Spotting Beretta's "designer" {Now only 1 summation message per member}
dwise1
Member
Posts: 5949
Joined: 05-02-2006
Member Rating: 5.5


Message 232 of 315 (477526)
08-04-2008 10:20 AM
Reply to: Message 230 by Beretta
08-04-2008 10:03 AM


Re: The problem isn't the end, it's the means.
You have to have lots and lots of these hypothetical positive mutations that all just have to happen in a concerted way to produce entirely new systems like a whole new respiratory system (without killing the hypothetical bird-like creature)-
Why stop with just that example? Reptiles have a 3-chambered heart while mammals have a 4-chambered heart. Mammals evolved from reptiles, so their hearts had to have changed from 3 to 4 chambers. How could that have possibly happened without killing off the intermediate forms?
Laddies, this one is just for Beretta, please.
Edited by dwise1, : No reason given.

This message is a reply to:
 Message 230 by Beretta, posted 08-04-2008 10:03 AM Beretta has replied

Replies to this message:
 Message 234 by Beretta, posted 08-04-2008 10:41 AM dwise1 has replied
 Message 237 by RickJB, posted 08-04-2008 10:57 AM dwise1 has not replied

dwise1
Member
Posts: 5949
Joined: 05-02-2006
Member Rating: 5.5


Message 243 of 315 (477546)
08-04-2008 12:10 PM
Reply to: Message 234 by Beretta
08-04-2008 10:41 AM


Re: The problem isn't the end, it's the means.
dwise1 writes:
Reptiles have a 3-chambered heart while mammals have a 4-chambered heart. Mammals evolved from reptiles, so their hearts had to have changed from 3 to 4 chambers. How could that have possibly happened without killing off the intermediate forms?
Well my very point -only in your faithful evolutionary perspective did it actually happen. Remember we only have minor variations as our evidence in the here and now - add to that potentially unwarranted extrapolations and a fossil record with a dirth
of evidence of intermediates and you only really have wishful thinking creating a four-chambered heart out of a three-chambered one. I need to see the creatures (plenty of them with a portion of the fourth chamber, the three and a half chambered intermediate heart working before i'll believe that.) I'm pretty sure that if you look at the mechanics of the situation, you'll find that to change one circulatory system to another without killing off the intermediates with your random mutations is quite a trick.
Crocs are born with a 3-chambered heart and as they grow that heart becomes a 4-chambered heart. Without skipping a beat. And, quite obviously, without killing the croc in the process.
What does it take to pull off that "trick"? The 3-chambered heart basic configuration (shared by amphibians as well) consists of 2 atria and one ventricle. One atrium gathers de-oxygenated blood from the body and the other atrium gathers oxygenated blood from the lungs. Both atria empty into the ventricle with contracts and pumps the blood out to the lungs and the rest of the body. Of course, since both atria empty into the same single ventricle, the oxygenated blood mixes with the de-oxygenated blood. Ineffecient though this may be, it's sufficient for small animals with low metabolic requirements.
The four-chambered heart has two ventricles, one pumping blood to the lungs and the other to the rest of the body. Each atrium empties into only one ventricle, so there is no mixing of oxygenated and de-oxygenated blood, which is much more efficient and supplies the oxygen needed by an animal with high metabolic requirements.
So what's the "trick"? What does it take to convert a heart from 3 chambers to 4? A septum, which is a thin muscular wall that splits the amphibian/reptilian ventricle into two. That is what keeps the croc alive through that entire process: the heart keeps working as it always did as the septum grows and finally closes off, after which it continues to work just as it always did, only now the oxygenated and de-oxygenated blood don't mix.
The reason why I had presented this little trap was to point out to you that just because you personally are unable to understand how something could happen and does happen, that does not constitute any kind of evidence against that something happening. It's been a while since I've formally studied the informal fallacies, but I believe that the fallacy that you have been basing most of your arguments on is called "personal incredulity."

This message is a reply to:
 Message 234 by Beretta, posted 08-04-2008 10:41 AM Beretta has replied

Replies to this message:
 Message 251 by Beretta, posted 08-05-2008 9:57 AM dwise1 has replied

dwise1
Member
Posts: 5949
Joined: 05-02-2006
Member Rating: 5.5


Message 256 of 315 (477646)
08-05-2008 3:56 PM
Reply to: Message 251 by Beretta
08-05-2008 9:57 AM


Re: The problem isn't the end, it's the means.
dwise1 writes:
What does it take to convert a heart from 3 chambers to 4? A septum, which is a thin muscular wall that splits the amphibian/reptilian ventricle into two.
Well I don't know -that's like saying that to convert a four chambered heart to a three chambered one, all you have to do is get rid of the septum -but that on it's own would definately kill you in the wild -it's just not that simple -a whole lot of other things have to change in order for it to work -and the changes have to be perfectly co-ordinated to keep you alive along the way.
First, removing the septum of a four-chambered heart would indeed make it three-chambered. But that would also cause the oxygenated and deoxygenated blood to mix and result in a reduction in the circulatory systems ability to deliver oxygen to the body. Now in a small cold-blooded animal that wouldn't cause much of a problem, but since a four-chambered heart normally belongs to warm-blooded animal of any size or a large cold-blooded animal (eg, a crocodile) who needs efficient delivery of oxygen to the body, such an operation would impair or even kill.
Why would you even suggest such a thing? What is your point? What possible bearing does that have on the fact that the transition from 3 to 4 chambers is not the impossibility that you erroneously believe it to be?
Second:
What evolutionists do is convert their philisophical prejudice into a sequence or story line that most likely never happened and then just wave their magic wand over it to baptize it as fact.
"most likely never happened"? It happens practically every day! You forget the crocodiles. Born with a three-chambered heart, which converts to a four-chambered heart as it grows larger? "never happened"? WTF?
OK. You claim that the transition from three to four chambers never happened. The crocodiles do it all that time -- collectively that is; each croc does it only once in its lifetime, if it grows to maturity, and it does so without skipping a beat.
Therefore, you are demonstrating to us that your beliefs and your position are contrary-to-fact and contrary to the evidence.
Thank you for clearing that up. Now that you have informed all of us of that fact, when are you going to get around to informing yourself?
dwise1 writes:
just because you personally are unable to understand how something could happen and does happen, that does not constitute any kind of evidence against that something happening....the fallacy that you have been basing most of your arguments on is called "personal incredulity."
Actually it's more about the fact that's there's no scientific evidence to back up the assertion so I'd rather tend towards incredulity until the evidence is there.The opposite of personal incredulity would be "gullibility" I'd think.
If you are going to make such exclusive use of fallacious arguments, you should at least try to familiarize yourself with the informal fallacies.
"Personal incredulity is related to the "argument from ignorance" (Argument from ignorance - Wikipedia):
quote:
The argument from ignorance, also known as argumentum ad ignorantiam ("appeal to ignorance" [1]) or argument by lack of imagination, is a logical fallacy in which it is claimed that a premise is true only because it has not been proven false or is only false because it has not been proven true.
The argument from personal incredulity, also known as argument from personal belief or argument from personal conviction, refers to an assertion that because one personally finds a premise unlikely or unbelievable, the premise can be assumed not to be true, or alternatively that another preferred but unproven premise is true instead.
Both arguments commonly share this structure: a person regards the lack of evidence for one view as constituting proof that another view is true.
Rather than causing oneself to fall prey to personal incredulity, the position that you should seek is one of skepticism, withholding acceptance of an idea until you can learn more about it.
And if you are to be honest about it, then, considering that:
1. you would be skeptical of evolution since you deem there to be insufficient evidence for it, and
2. there is vastly more evidence for evolution than there is for ID, then
3. (conclusion) you must also be skeptical of ID.
Of course, you could gullibly accept ID despite its total lack of evidence, but in that case you would not be honest.
We have no problem at all if someone doesn't accept evolution. The problem is when they promote the rejection of evolution and science for all the wrong reasons. If you are going to reject something, then do it for the right reasons. And if you are going to attack an idea, then do it correctly.
Oh, and if you protest that there is indeed evidence for ID, do please present it! That is, after all, what this topic is here for.

This message is a reply to:
 Message 251 by Beretta, posted 08-05-2008 9:57 AM Beretta has replied

Replies to this message:
 Message 258 by Beretta, posted 08-06-2008 3:51 AM dwise1 has not replied
 Message 259 by RickJB, posted 08-06-2008 4:14 AM dwise1 has not replied

Newer Topic | Older Topic
Jump to:


Copyright 2001-2023 by EvC Forum, All Rights Reserved

™ Version 4.2
Innovative software from Qwixotic © 2024