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Cave Colours Reveal Mental Leap
BBC ^
| 12-11-2003
| Dr David Whitehouse
Posted on 12/11/2003 12:33:44 PM PST by blam
click here to read article
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1
posted on
12/11/2003 12:33:46 PM PST
by
blam
To: blam
Might be related to the rise of color vision. Do dogs see in black and white? Dogs wouldn't care about ochre if that is so, but dogs do arrange things according to other attributes.
2
posted on
12/11/2003 12:36:34 PM PST
by
RightWhale
(Close your tag lines)
To: blam; *Gods, Graves, Glyphs; abner; Alas Babylon!; Andyman; annyokie; bd476; BiffWondercat; ...
Gods, Graves, Glyphs List for articles regarding early civilizations , life of all forms, - dinosaurs - etc.
Let me know if you wish to be added or removed from this ping list.
3
posted on
12/11/2003 12:49:39 PM PST
by
farmfriend
( Isaiah 55:10,11)
To: blam
Were the colors added by the Fab5 (queer eye for the straight guy) or just by accident?
To: farmfriend; blam
Kind of ironic that BBC's accompanying photo is in... black and white.
5
posted on
12/11/2003 12:52:53 PM PST
by
Constitution Day
(Thomas: "Apparently, the marketplace of ideas is to be fully open only to defamers, nude dancers...")
To: blam
read later
To: RightWhale
My older son did an experiment for science fair that seemed to prove that dogs can distinguish yellow and blue. Unfortunately, it was disqualified because of rules about "experimenting on animals" - in this case, feeding our Golden Retriever, Lizzie, morsels of dog kibble on various colored paper plates. And now he's lost interest, so it remains for later generations of science to research.
To: CobaltBlue
Yellow and blue have different values (intensities) as well as hues (color shade).
If you really want to see if dogs can distinguish color, you need to select two different hues with the same intensity (i.e. they would appear as the same shade of gray if photographed in B&W).
8
posted on
12/11/2003 2:32:13 PM PST
by
krb
(the statement on the other side of this tagline is false)
To: PatrickHenry; VadeRetro; Piltdown_Woman; RadioAstronomer
Ping.
9
posted on
12/11/2003 2:36:27 PM PST
by
Junior
(To sweep, perchance to clean... Aye, there's the scrub.)
To: krb
The dog preferred yellow and blue about the same, and both more than black, white, or red. Whether there is any significance whatsoever, remains to be seen.
We were both very disappointed that the sponsor screwed up the rules. I thought there was a problem to begin with but was assured it was OK. Our vet was willing to supervise, but we were told all that needed to be done was that the vet approve the study, and not supervise. Oh, well. I know it's well intentioned.
When I was in high school, as a science fair project a girl froze her gerbil to see if it would come back to life when she thawed it. No. Duh. Well, that's the reason they have strict rules about experimentation on animals.
To: CobaltBlue
HAHAHAHAHA! I can't believe the parents let the girl do that experiment!
11
posted on
12/11/2003 2:48:07 PM PST
by
krb
(the statement on the other side of this tagline is false)
To: krb
I can't believe the parents let the girl do that experiment! They were probably wondering, too. True science.
12
posted on
12/11/2003 2:49:11 PM PST
by
RightWhale
(Close your tag lines)
To: RightWhale
Do dogs see in black and white? I had a dog who could identify Federal Express trucks, UPS trucks, and of course, mail trucks. Whenever one of them would round the corner, she'd go nuts, expecting that they'd pull into the driveway, as they sometimes did. No other trucks would set her off. I assumed it was their colors that she recognized -- at least UPS, which is somewhat distinctive.
13
posted on
12/11/2003 2:50:24 PM PST
by
PatrickHenry
(Felix, qui potuit rerum cognoscere causas.)
To: PatrickHenry
Sound--delivery trucks use odd little motors
Odor--delivery trucks burn unusual fuel
Mind reading--dogs sense intent to deliver
14
posted on
12/11/2003 3:05:32 PM PST
by
RightWhale
(Close your tag lines)
To: PatrickHenry
I can hear the FedEx, UPS and U.S. mail trucks coming a block away. The sounds are distinctive enough that I don't enough need to look out the window to discern which one it is.
15
posted on
12/11/2003 3:09:43 PM PST
by
Myrddin
To: PatrickHenry
My dogs go crazy when the meter readers arrive. I finally figured out why...they had used mace on my dogs in the past. They each walk up to the meter with a spray can in their hand.
16
posted on
12/11/2003 3:47:20 PM PST
by
blam
To: krb
"I can't believe the parents let the girl do that experiment"
Having had children who had rodents for pets, I CAN believe the parents let her do it...
17
posted on
12/11/2003 3:47:51 PM PST
by
elli1
To: blam
The great leap in human evolution occured when we started painting in beige.
18
posted on
12/11/2003 3:54:16 PM PST
by
PJ-Comix
(Adolph the Red-Nosed Reindeer just kicked Santa down the chimney)
To: RightWhale
Sound--delivery trucks use odd little motors Yes, the postal trucks do. But UPS uses plain old vans -- well, delivery type, with an open-sided step-out type of cab. I don't know what their engines sound like. Never paid attention. You may be right about that. But the dog could spot them through a closed window, and the street is at least 50 yards in the distance. Well, if I can hear the traffic -- and I can -- I'm sure the dog could. My point was that loads of trucks pass by, many of them are delivery-type (I guess), but only FedEx, UPS, and the mail trucks got her attention. Thus I assumed it was the colors that the dog had learned to recognize, and those colors became associated with visits from such trucks. Anyway, it wasn't because of any visual clues from me. It was the dog who clued me in when one of those trucks was passing by.
Which has very little to do with red bones in caves ...
19
posted on
12/11/2003 4:55:23 PM PST
by
PatrickHenry
(Felix, qui potuit rerum cognoscere causas.)
To: Prof Engineer
ping
20
posted on
12/11/2003 7:03:32 PM PST
by
msdrby
(US Veterans: All give some, but some give all.)
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