The Instigator
emospongebob527
Pro (for)
Losing
0 Points
The Contender
Muted
Con (against)
Winning
15 Points

Homo Sapiens Sapiens (Humans) Evolved From Earlier Hominids.

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Post Voting Period
The voting period for this debate has ended.
after 4 votes the winner is...
Muted
Voting Style: Open Point System: 7 Point
Started: 11/5/2012 Category: Science
Updated: 4 years ago Status: Post Voting Period
Viewed: 1,279 times Debate No: 26929
Debate Rounds (5)
Comments (6)
Votes (4)

 

emospongebob527

Pro

I have made this debate impossible to accept, so if anyone wants to debate me, just post a comment in the comments section regarding your acceptance.

My resolution: Humans most likely evolved from earlier hominids.

Rules-

Please no trolling or semantics.


Definitions-

humans- primates of the family Hominidae, and the only living species of the genus Homo.


evolved- to produce by natural evolutionary processes.


from- used as a function word to indicate a starting point of a physical movement or a starting point in measuring or reckoning or in a statement of limits.


earlier- happening or done before the usual or expected time.

hominids- any of a family (Hominidae) of erect bipedal primate mammals that includes recent humans together with extinct ancestral and related forms and in some recent classifications the gorilla, chimpanzee, and orangutan.


Round Structure-

1. Acceptance
2. Main Arguments
3. Rebuttals
4. Rebuttals to Rebuttals
5. Conclusion/Resolution Reached
Muted

Con

I accept. Present your ideas and let me change them!
Debate Round No. 1
emospongebob527

Pro

Thanks to Muted for accepting this wonderful debate.


Arguments-

Cutis Anserina

One notable feature our hominid ancestors had that are useless to us i.e, mutations/natural selection would be Cutis Anserina or goosebumps. Animals today such as humans, dogs, cats, and porcupine may get goosebumps when they are cold, frightened, agitated, or surprised. This reason these are created is because in cold situations, the rising hair traps air between hair and skin to create a sensation of warmth. In response to frightening or agitating situations, the influx of hair will make a creature appear bigger, warding off any foes or such, these are useless to humans because, once our ancestors started wearing clothes and advancing to a point when natural enemies weren't common, these became useless, the process of natural selection disposed of the thick hair but left the mechanism for the cutis.
Vomeronasal organ
At a time when our ancestors were unable to communicate, they used an organ that humans today still have, although useless, called the Vomeronasal organ or Jacobson's organ. This organ was used by our ancestors to detect pheromones useful for triggering sexual desire, alarm, or finding food trails. Humans are born with this vestigial structure but through the advancement of social structure, communication, and technology, this organ has become useless.

Plantaris Muscle
The plantaris muscle is a muscle used by modern animals who are able to grip and handle objects usefully with their feet, such as we use our hands today, this is observable in many great apes today i.e, gorilla, chimpanzee, orangutan, gibbon, etc. This was also useful for our tree-dwelling ancestor, Australopithecus Africanus, however these muscles are very useless for humans today, so underdeveloped that today it is often times removed by doctors to be used for reconstruction in other parts of the body. Another vestigal struture.

Wisdom Teeth
Another structure useful to our ancestors, but virtually useless to us would be, wisdom teeth, these extra setof molars were useful for our ancestors because they needed to chew and eat shoots and leaves quickly enough to burden a suffiecient amount of plant nutrients today, this was also useful for them because our ancestors weren't as efficient at digesting cellulose as us, the larger teeth could grind up the food and made it digestible. As hominid evolution progressed, diets changed, jaws grew considerably smaller, and wisdom teeth were virtually useless, so far as to some human populations have completely stopped growing these teeth.

Coccyx
The coccyx is the tailbone that lingers in humans today, as the name implies, this was once useful for a tail by our ancestors, as the pelvis evolved, our ancestors began to walk upright and trees weren't very commonplace to hang out, although useless as a tail appendage, it is still useful today; it is now used by humans to support various muscles and support someone when they sit down or lean back. The coccyx is also useful for supporting the positioning of the anus, another vestigal structure.

Appendix

Another internal organ very useful for our ancestors that is virtually useless for humans today would be the appendix. Often times becoming inflamed or infected and causing horrific abdominal pain, to the point where it must be removed. It's use by our ancestors was to help digest and process the cellulose found in their plant based diet. Of course through evolutionary changes, a plant based diet of today's omnivores is quite irrelavent. Another interesting spetacle created through natural selection was the slection of larger appendices because they were substanstially less likely to become inflamed or disease, another vestigal structure.


References-

http://listverse.com...
Muted

Con

Thanks for beginning this debate. I hope there will be some sort of understanding by the end of it.

You bring up the idea of vestigial organs and present several as evidence for evolution. I will attempt to show here that the arguments are false.

Cutis Anserina
[1] Cutis, commonly called goosebumps, are actually not useless. On a human"s skin is a small layer of hair that traps air, the muscles that contract when these are raised also help secrete oil onto the skin. The hairs stop clogging in muscle glands. The hairs also keep perspiration in an even layer instead of dripping off. This shows that there is use for cutis anserina.
As I have shown, humans have use for this phenomena. Furthermore, there is no evidence that we have lost any fur at all.

Vomeronasal organ
This organ is hardly useless. As [2] shows, humans still very much use pheromones in life. "There is fairly clear evidence for chemical communication among humans. The most notable example is a trend towards synchronization of menstrual cycles in women who live together."

Plantaris Muscle
There is much evidence that this muscle is not useless. [3] Injury of this muscle causes what is known as "tennis leg." There is even more evidence that this muscle is not locomotive in nature, but rather sensory. This is because of the (See [4] for anatomical study) proprioceptive receptor end organs

Wisdom teeth
Problems with wisdom teeth are actually only present in places with low fibre diets. In high fibre diets region like Africa, no problems are met with. [5] It is actually due to the disuse of the teeth in soft diet cultures.

Coccyx
This is actually a very useful piece of bone. Without it, your anus would have no shape because this is the connection point for those muscles! Try taking away your coccyx and tell me how you feel.

Appendix
The appendix has many useful abilities. "The mucosa and submucosa of the appendix are dominated by lymphoid nodules, and its primary function is as an organ of the lymphatic system." [6]
"The appendix contains a high concentration of lymphoid follicles. These are highly specialized structures which are a part of the immune system. The clue to the appendix"s function is found in its strategic position right where the small bowel meets the large bowel or colon. The colon is loaded with bacteria which are useful there, but which must be kept away from other areas such as the small bowel and the bloodstream.
Through the cells in these lymphoid follicles, and the antibodies they make (see box below), the appendix is "involved in the control of which essential bacteria come to reside in the caecum and colon in neonatal life"."

Now back to you, and thank you for the debate once again.

1. http://creation.com...
2. http://chemse.oxfordjournals.org...; And see http://www.ingentaconnect.com...
3. http://www.ncbi.nlm.nih.gov...
4. http://jbjs.org...
5. http://onlinelibrary.wiley.com...
6. http://creation.com...
Debate Round No. 2
emospongebob527

Pro

emospongebob527 forfeited this round.
Debate Round No. 3
emospongebob527

Pro


Muted forfeited this round.

Debate Round No. 4
emospongebob527

Pro

I love you, you are my squishy.


Therefore I urge the voters to vote Tie, then when the voting period is over change your votes, eat a pic save your life.
Muted

Con

emospongtroll
Debate Round No. 5
6 comments have been posted on this debate. Showing 1 through 6 records.
Posted by Muted 4 years ago
Muted
Those are vestigial organs, they do not prove evolution.
Posted by Muted 4 years ago
Muted
Yep
Posted by emospongebob527 4 years ago
emospongebob527
Do you want to accept?
Posted by Muted 4 years ago
Muted
But I AM IMPOSSIBLE!!!
Posted by emospongebob527 4 years ago
emospongebob527
Read the R1 credentials.
Posted by Muted 4 years ago
Muted
Why cannot accept?
4 votes have been placed for this debate. Showing 1 through 4 records.
Vote Placed by truthseeker613 4 years ago
truthseeker613
emospongebob527MutedTied
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Total points awarded:04 
Reasons for voting decision: F.F.
Vote Placed by mecap 4 years ago
mecap
emospongebob527MutedTied
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Total points awarded:03 
Reasons for voting decision: Con wins due to Pro's forfeit. In addition, Pro's argument is not really focused correctly: the point of this debate was to show that Homo Sapiens evolved from other Hominids, yet Pro argues about vestigial organs/features. These organs/features only indicate shared ancestry with other mammals, that's not direct evidence for ancestry with Hominids. Better lines of evidence would be the Hominid fossil record and genetics.
Vote Placed by MouthWash 4 years ago
MouthWash
emospongebob527MutedTied
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Total points awarded:04 
Reasons for voting decision: *facepalm*
Vote Placed by AlwaysMoreThanYou 4 years ago
AlwaysMoreThanYou
emospongebob527MutedTied
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Reasons for voting decision: I have a problem with people telling me what to do, Pro.