Book contents
- Frontmatter
- Contents
- Acknowledgements
- Profile of Professor Tobias
- List of participants
- Foreword
- Address
- Keynote address
- Searching for common ground in palaeoanthropology, archaeology and genetics
- The history of a special relationship: prehistoric terminology and lithic technology between the French and South African research traditions
- Essential attributes of any technologically competent animal
- Significant tools and signifying monkeys: the question of body techniques and elementary actions on matter among apes and early hominids
- Tools and brains: which came first?
- Environmental changes and hominid evolution: what the vegetation tells us
- Implications of the presence of African ape-like teeth in the Miocene of Kenya
- Dawn of hominids: understanding the ape-hominid dichotomy
- The impact of new excavations from the Cradle of Humankind on our understanding of the evolution of hominins and their cultures
- Stone Age signatures in northernmost South Africa: early archaeology in the Mapungubwe National Park and vicinity
- Vertebral column, bipedalism and freedom of the hands
- Characterising early Homo: cladistic, morphological and metrical analyses of the original Plio-Pleistocene specimens
- Early Homo, ‘robust’ australopithecines and stone tools at Kromdraai, South Africa
- The origin of bone tool technology and the identification of early hominid cultural traditions
- Contribution of genetics to the study of human origins 276
- An overview of the patterns of behavioural change in Africa and Eurasia during the Middle and Late Pleistocene
- From the tropics to the colder climates: contrasting faunal exploitation adaptations of modern humans and Neanderthals
- New neighbours: interaction and image-making during the West European Middle to Upper Palaeolithic transition
- Late Mousterian lithic technology: its implications for the pace of the emergence of behavioural modernity and the relationship between behavioural modernity and biological modernity
- Exploring and quantifying technological differences between the MSA I, MSA II and Howieson's Poort at Klasies River
- Stratigraphic integrity of the Middle Stone Age levels at Blombos Cave
- Testing and demonstrating the stratigraphic integrity of artefacts from MSA deposits at Blombos Cave, South Africa
- From tool to symbol: the behavioural context of intentionally marked ostrich eggshell from Diepkloof, Western Cape
- Chronology of the Howieson's Poort and Still Bay techno-complexes: assessment and new data from luminescence
- Subsistence strategies in the Middle Stone Age at Sibudu Cave: the microscopic evidence from stone tool residues
- Speaking with beads: the evolutionary significance of personal ornaments
- Personal names index
- Subject index
Essential attributes of any technologically competent animal
Published online by Cambridge University Press: 04 June 2019
- Frontmatter
- Contents
- Acknowledgements
- Profile of Professor Tobias
- List of participants
- Foreword
- Address
- Keynote address
- Searching for common ground in palaeoanthropology, archaeology and genetics
- The history of a special relationship: prehistoric terminology and lithic technology between the French and South African research traditions
- Essential attributes of any technologically competent animal
- Significant tools and signifying monkeys: the question of body techniques and elementary actions on matter among apes and early hominids
- Tools and brains: which came first?
- Environmental changes and hominid evolution: what the vegetation tells us
- Implications of the presence of African ape-like teeth in the Miocene of Kenya
- Dawn of hominids: understanding the ape-hominid dichotomy
- The impact of new excavations from the Cradle of Humankind on our understanding of the evolution of hominins and their cultures
- Stone Age signatures in northernmost South Africa: early archaeology in the Mapungubwe National Park and vicinity
- Vertebral column, bipedalism and freedom of the hands
- Characterising early Homo: cladistic, morphological and metrical analyses of the original Plio-Pleistocene specimens
- Early Homo, ‘robust’ australopithecines and stone tools at Kromdraai, South Africa
- The origin of bone tool technology and the identification of early hominid cultural traditions
- Contribution of genetics to the study of human origins 276
- An overview of the patterns of behavioural change in Africa and Eurasia during the Middle and Late Pleistocene
- From the tropics to the colder climates: contrasting faunal exploitation adaptations of modern humans and Neanderthals
- New neighbours: interaction and image-making during the West European Middle to Upper Palaeolithic transition
- Late Mousterian lithic technology: its implications for the pace of the emergence of behavioural modernity and the relationship between behavioural modernity and biological modernity
- Exploring and quantifying technological differences between the MSA I, MSA II and Howieson's Poort at Klasies River
- Stratigraphic integrity of the Middle Stone Age levels at Blombos Cave
- Testing and demonstrating the stratigraphic integrity of artefacts from MSA deposits at Blombos Cave, South Africa
- From tool to symbol: the behavioural context of intentionally marked ostrich eggshell from Diepkloof, Western Cape
- Chronology of the Howieson's Poort and Still Bay techno-complexes: assessment and new data from luminescence
- Subsistence strategies in the Middle Stone Age at Sibudu Cave: the microscopic evidence from stone tool residues
- Speaking with beads: the evolutionary significance of personal ornaments
- Personal names index
- Subject index
Summary
Abstract
One of the factors contributing to human dominance among animals is the ability to translate intelligence and imagination into tangible technology. During the last two million years, members of the human lineage have doubled their brain size, despite the fact that neural tissue is metabolically expensive, suggesting that strong selective pressures were driving the process. Some of these were clearly the advantages bestowed by technology, such as the management of fire and the use of more and more sophisticated tools and weapons.
But if technology can bestow such valuable advantages, why have many other animals not followed this course to the same extent? It seems to me that there are at least five obvious constraints that would apply to any candidate for the role of a ‘technologically competent animal’. Although some are applicable only if the candidate were a mammal, they are:
1. A critical minimum brain size. As was emphasised by Phillip Tobias as long ago as 1971, the human brain is characterised by a very large number of ‘extra neurons’, over and above those needed to handle the basic functions of the body. For human-style intelligence, it seems that a volume of at least 500 cc of ‘extra’ neural tissue-hardware is required, so a constraint is imposed on the minimum size of a mammal that could accommodate this. The constraint does not seem to be as rigidly applied in the case of birds.
2. Suitable appendages for manipulating objects related to the technology in question.
3. A social organisation that would promote the collective effort required for the successful fulfilment of any major technological undertaking.
4. A language-like communication system that would allow the exchange of concepts between individuals.
5. Appropriate birth-canal adjustments to allow the passage of the offspring's large head in such technologically competent mammals.
Various animals fulfil these requirements to some extent and could go on to become completely technologically competent in the course of future evolution, given the appropriate selective pressures. Some such animals are discussed in this paper.
Résumé
Un des facteurs contribuant au succès de notre espèce réside dans sa capacité à traduire son intelligence et son imagination en une technologie performante.
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- Information
- From Tools to SymbolsFrom Early Hominids to Modern Humans, pp. 38 - 51Publisher: Wits University PressPrint publication year: 2005