MY AMERICAN SCIENTIST
LOG IN! REGISTER!
SEARCH
 
RSS
Logo IMG
HOME > PAST ISSUE > COMMENTS

Do the Eyes Have It?


Comments


The use of the dog at the neanderthal time and conquest of Modern man was probably not limited to services that the dog can make in his lifetime: security, waste disposal. The dog also operates as a meat animal and for his fur
posted by Pierre-Francois PUECH
April 14, 2012 @ 3:23 PM


06-04-2012

I am not sure why you are concerned with the sclera of Neandertals. First you would need to show that dogs that normally follow the gaze of a human do not follow the gaze of a human whose sclera is masked by a contact-lens sort of device, giving the sclera some other color. The color of the eye may make little difference, as long as the dog knows where the human is looking. The only demonstration I have seen involved having the human turn their head toward what they are viewing, i.e., point their nose toward the object. It did not take into account the colors of the visible eye. In fact, it is not clear that the dog was even looking directly into the eyes of the human.

Further, to suggest the human beings with white sclera were selected for by interacting with dogs is a very hard sell. It would imply that there is no way to train a dog without having white sclera. But dogs can be trained for hand signals and sound signals.

Wolves that were selected for docile, non-aggressive behavior were probably the ones that became modern dogs. They were probably not selected by the propensity to focus on white sclera; there is no reason to suppose otherwise.

Your speculation is interesting but unless you have some other evidence related to the color of human sclera, you are making unnecessary assumptions.


On a tangent, it is absurd for people to assume that just because they buried their dog, the also shared some cultural delusions common today, i.e., the existence of a soul, and afterlife, and so on. One could just as well assume that someone left a bone for the dog in case it started moving again, as if they expected it to wake up from a drunken state, a stupor, or a deep sleep. All of that is speculation sans evidence, just like assuming ancient humans held particular religious views.

posted by Bradley Ball
June 5, 2012 @ 7:03 PM

 

Read Us on JSTOR

JSTOR, the online academic archive, now contains complete back issues of American Scientist from its inception in 1913 (as Sigma Xi Quarterly) through 2005.

The table of contents for each issue is freely available to all users; those with institutional access can read each complete issue.

View the full collection here.


Indexes

Year-end indexes in PDF format:

2006

2007

2008

2009

2010


Subscribe to Free eNewsletters!

  • Sigma Xi SmartBrief:

    A free daily summary of the latest news in scientific research. Each story is summarized concisely and linked directly to the original source for further reading.

  • American Scientist Update

  • An early peek at each new issue, with descriptions of feature articles, columns, Science Observers and more. Every other issue contains links to everything in the latest issue's table of contents.

  • Scientists' Nightstand

  • News of book reviews published in American Scientist and around the web, as well as other noteworthy happenings in the world of science books.

    To sign up for automatic emails of the American Scientist Update and Scientists' Nightstand issues, create an online profile, then sign up in the My AmSci area.


Write for American Scientist

Review our submission guidelines.


Subscribe to American Scientist