My child is extraordinary. He enters the kitchen, glances at me, and articulates enchanting words: “Could I please have a cheese and tomato sandwich?” Moments later, that very snack materializes in front of him.
Other young animals express their hunger through sounds and murmurs, but only humans possess advanced grammar and vocabulary systems that enable precise communication.
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Research into animal behavior reveals that these creatures exhibit many traits previously thought to be exclusive to humans—from culture to emotional depth, and even aspects of morality. While language may seem to set us apart, “I believe language gives us a unique status as a species,” says Brian Relch from the University of North Carolina, Chapel Hill.
Given this context, one critical area of research focuses on how language originated and why it evolved solely within our human lineage.
Psychologist Simon Edelman from Cornell University proposes in The Magical Power of Language that there is a straightforward evolutionary rationale. Alongside his colleague Oren Korodny, now at Hebrew University in Jerusalem, he theorizes that the origins of language may date back approximately 1.7 million years, coinciding with early humans developing the ability to create stone tools—a skill beyond the capabilities of non-human animals.
The notion is that tool-making locations functioned as learning environments, where novice tool creators required guidance from experienced individuals. Proto-language may have developed as a way for mentors to instruct their students, possibly explaining why both language and tool-making appear to necessitate cognitive structures that organize thoughts in a coherent sequence.
However, around a decade ago, a pivotal experiment questioned this narrative. In 2014, Shelby Putt from Illinois State University and her team investigated how individuals learn to create tools, exposing 24 volunteers either to expert instructions or to direct demonstrations while occasionally engaging their attention. Surprisingly, both approaches proved effective, indicating that intricate tool-making may not rely on verbal language.
This does not imply that Putt views language and tool-making as entirely disconnected. She posits that creating complex tools required individuals to structure their thoughts and organize them to achieve their task. She asserts that this ability led to an expansion of brain regions associated with working memory, enabling easier mental manipulation of concepts.
Nonetheless, Putt suggests that humans utilized these cognitive frameworks to devise language, enhancing communication and potentially increasing survival odds.
All these scenarios presume that language functions fundamentally as a communication tool among individuals. However, an alternative perspective on the evolution of language emphasizes the ways it aids individuals in organizing their thoughts when confronted with complex tasks.
Some, including prominent linguist Noam Chomsky, argue that this may have driven language evolution, suggesting it had no relation to tool-making. These researchers propose that language emerged approximately 70,000 years ago, possibly due to random genetic mutations that reconfigured brain circuitry.
Ultimately, the origins of language remain a subject of debate. If Chomsky and his associates are correct, the development of language was less about magic and more about fortunate circumstances.
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Source: www.newscientist.com
