Wolfgang Kohler Quotes

In his great treatise, Electricity and Magnetism, Clerk Maxwell had remarked that we are often told that in science we must, first of all, investigate the properties of very small local places one after another, and only when this has been done can we permit ourselves to consider how more complicated situations result from what we have found in those elements. This procedure, he added, ignores the fact that many phenomena in nature can only be understood when we inspect not so-called elements but fairly large regions.

According to a classic experiment by Wolfgang Kohler, you can take two gray pieces of paper-one dark, one bright-and teach the chickens to expect food on the brighter of the two. If you then remove the darker piece and replace it by one brighter than the other one, the deluded creatures will look for their dinner, not on the identical gray paper where they have always found it, but on the paper where they would expect it in terms of relationships-that is, on the brighter of the two. Their little brains are attuned to gradients rather than to individual stimuli. Things could not go well with them if nature had willed it otherwise. For would a memory of the exact stimulus have helped them to recognize the identical paper? Hardly ever! A cloud passing over the sun would change its brightness, and so might even a tilt of the head, or an approach from a different angle. If what we call "identity" were not anchored in a constant relationship with environment, it would be lost in the chaos of swirling impressions that never repeat themselves.

The findings that were deemed believable enough to be published, however, revolutionized ethologists’ thinking. Ethologists began to speak less often of a chasm between man and ape; they began to speak instead of a dividing “line.” And it was a line that, in the words of Harvard primatologist Irven De Vore, was “a good deal less clear than one would ever have expected.” What makes up this line between us and our fellow primates? No longer can it be claimed to be tool use. Is it the ability to reason? Wolfgang Kohler once tested captive chimps’ reasoning ability by placing several boxes and a stick in an enclosure and hanging a banana from the high ceiling by a string. The animals quickly figured out that they could get to the banana by stacking the boxes one atop the other and then reaching to swat at the banana with a stick. (Once Geza Teleki found himself in exactly this position at Gombe. He had followed the chimpanzees down into a valley and around noon discovered he had forgotten to bring his lunch. The chimps were feeding on fruit in the trees at the time, and he decided to try to knock some fruit from nearby vines with a stick. For about ten minutes he leaped and swatted with his stick but didn’t manage to knock down any fruit. Finally an adolescent male named Sniff collected a handful of fruit, came down the tree, and dropped the fruit into Geza’s hands.) Some say language is the line that separates man from ape. But this, too, is being questioned. Captive chimpanzees, gorillas, and orangutans have been taught not only to comprehend, but also to produce language. They have been taught American Sign Language (ASL), the language of the deaf, as well as languages that use plastic chips in place of words and computer languages. One signing chimp, Washoe, often combined known signs in novel and creative ways: she had not been taught the word for swan, but upon seeing one, she signed “water-bird.” Another signing chimp, Lucy, seeing and tasting a watermelon for the first time, called it a “candy-drink”; the acidic radish she named “hurt-cry-food.” Lucy would play with toys and sign to them, much as human children talk to their dolls. Koko, the gorilla protegee of Penny Patterson, used sign language to make jokes, escape blame, describe her surroundings, tell stories, even tell lies. One of Biruté’s ex-captives, a female orangutan named Princess, was taught a number of ASL signs by Gary Shapiro. Princess used only the signs she knew would bring her food; because she was not a captive, she could not be coerced into using sign language to any ends other than those she found personally useful. Today dolphins, sea lions, harbor seals, and even pigeons are being taught artificial languages, complete with a primitive grammar or syntax. An African grey parrot named Alex mastered the correct use of more than one hundred spoken English words, using them in proper order to answer questions, make requests, do math, and offer friends and visitors spontaneous, meaningful comments until his untimely death at age 31 in 2007. One leading researcher, Ronald Schusterman, is convinced that “the components for language are present probably in all vertebrates, certainly in mammals and birds.” Arguing over semantics and syntax, psychologists and ethologists and linguists are still debating the definitions of the line. Louis Leakey remarked about Jane’s discovery of chimps’ use of tools that we must “change the definition of man, the definition of tool, or accept chimps as man.” Now some linguists have actually proposed, in the face of the ape language experiments, changing the definition of language to exclude the apes from a domain we had considered uniquely ours. The line separating man from the apes may well be defined less by human measurement than by the limits of Western imagination. It may be less like a boundary between land and water and more like the lines we draw on maps separating the domains of nations.