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About Toshiya Nagai
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Blog postThe modern civilization that originated from the Industrial Revolution is now spreading throughout the world. The demand for natural resources is rapidly increasing and the environmental problems are getting globally more and more serious. Our civilization seems hardly sustainable. What should we do to make it sustainable? This series establishes the fundamental theory of civilization, analyzes the problems of resources and the environment in terms of entropy, and suggests a solution to them.
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Blog postKurzweil published The Singularity Is Near: When Humans Transcend Biology in 2005 and predicted that human life will be transformed to transcend the current biological limitations from 2045 on. More and more people believe in the technological singularity as artificial intelligence approaches human intelligence. But is his Singularitarianism worth believing? Here I critically examine whether his prediction is correct or not.
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Blog postI have decided to integrate the contents placed in four websites into a new domain nagaitoshiya.com from August 1, 2015 on. The URLs of Systemics Blog and Systemics Archive are automatically redirected respectively to those of the new website, NagaiToshiya.com, while those of Systemics Wiki and Systemics Forum are redirected to its portal page.
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Blog postMost of people believe that material recycling is the true recycling and thermal recycling is a fake. But the conventional material recycling is actually downcycling, whereas thermal recycling by the gasification system can realize more radical recycling. That is to say, what was thought to be the genuine recycling is deceptive, whereas what was thought to be the deceptive recycling is genuine. This recognition leads to reconsideration of the role that the government must play to promote recycl
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Blog postGeorgescu-Roegen coined the fourth law of thermodynamics according to which matter continuously and irrevocably degrades from an available to an unavailable state in a closed system including the Earth and predicted that we would soon arrive at the state of maximum entropy, material death rather than heat death. He also insisted that recycling could not avoid this material death, because the ideal of complete recycling is based on the illusion of the thermodynamically impossible perpetual motio
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Blog postClausius, one of the main founders of the modern thermodynamics, is the originator of the term “entropy,” but before this coinage he used an expression “equivalence value of transformations” instead. The term “entropy,” which is now used as a physical term, was originally economically conceived as equivalent value of exchange. Thermodynamics itself was a field of physics that was economically motivated to improve the thermal efficiency of heat engines. So, it was half physics and half economics
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Blog postA heat engine is a device that repeatedly converts thermal energy into kinetic energy. It needs the difference of temperature and a working substance with a high rate of expansion to do useful work for us. It can be done in two ways: utilizing the change of volume of the working substance that hot and cold reservoirs make alternately expand or compress, and utilizing convection that the change of density resulting from the change of volume causes. A heat engine is not confined to an artificial
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Blog postGalileo was once thought to have discovered kinetic laws important for classical mechanics by himself by means of observations and experiments in contrast to the Scholastics who confined themselves to the interpretation of Aristotle. To be sure he gave such an impression to readers, but the fact is that the Scholastics in 14th century such as Oxford Calculators and Oresme who discovered and developed the Mean Speed Theorem prepared for Galileo’s discovery of kinetic laws. They did not perform e
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Blog postChristianity and Judaism are paternal religions that came into power after overcoming maternal religions. The Catholic Church thought of GalileoâÂÂs heliocentrism as the revival of a maternal religion, because it implies that Mother Earth moves by itself and makes the sun, the symbol of Father God, fall.
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Blog postThe Anno Domini dating system and the Gregorian calendar that we now use are not zero-based numbering systems. There are no zeroth days, zeroth months or the zeroth year in these systems. That is because Europeans did not know zero as a number when they invented the AD dating system and the Roman calendar, the prototype of the Gregorian calendar. The numeral system we now use is, however, the zero-based decimal system. Identifying the time in reference to the current time system makes it diffic
Titles By Toshiya Nagai
