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Extra info for Project Cyclops: A Design Study of a System for Detecting Extraterrestrial Intelligence

Example text

The symbols were those of writing and measurement, and they permitted more complete communication and planning. Early sign writing evolved into the alphabets. Numbers could be written down, communicated, and preserved, and the precision of the manufacture of tools, buildings, vehicles, and other devices were improved by measurement. The rapid cultural evolution at the beginning of recorded history brought a much greater control of the environment and utilization of its resources. It became possible for larger populations to support themselves in relative stability.

20. , What is Life? Macmillan, New York (1946). 21. , Carbon isotopic studies of organic matter in preCambrian rocks. Science, 175, 1246-1248 (1972). 22. , Origin of Species, J. Murray, London (1859). 23. , The Rate of Star Formation, Astro- 24. 25. 26. physical Journal, vol. 129, Number 2, page 243 (1959). , The Rate of Star Formation, II Astrophysical Journal, Vol. 137, Number 3, page 759 (1963). , A formulation for the number of communicative civilizations in the Galaxy, Icarus, Vol. 14, No.

Acquired characteristics can be transmitted in this special fashion. It is clear that further development of associative areas in the brain, together with better ability to utilize the knowledge residing in the internal model, would confer selective advantages. Brain size began to increase rapidly. Between the time of Australopithecus, some two million years ago, and the present day, the brain has increased in volume from about 500 cubic centimeters to 1300 or 1400 cubic centimeters. " The ability to retain crucial components of the internal model led to the increasing complexity of shortand long-term memory.

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