some essential definitions in the field of cryptography are:
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"Few false ideas have more firmly gripped the minds of so many intelligent men than the one that, if they just tried, they could invent a cipher that no one could break." (David Kahn)
The variants of encryption systems are endless.
For deciphering there exists always the same game of trial and error (first guessing the encryption method, then the code). A help to do so is pruning. Once, after a more or less long or short period a code/cipher breaks. Monoalphabetic ciphers can be broken easily and of course are no longer used today but for games.
for further information on codes and ciphers etc. see:
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The convergence of biology and technology is not an entirely new phenomenon but and has its origin in the concept of modern technology itself. This concept understands technology as something bigger, stronger, and more reliable than ourselves. But, unlike human beings, technologies are always tied to specific men-defined purposes. In so far as men define purposes and build the technology to achieve those purposes, technology is smaller than ourselves. The understanding of technology as a man-controlled tool has been called the instrumental and anthropological understanding of technology.
However, this understanding is becoming insufficient when technologies become fast and interdependent, i.e. when fast technologies form systems and global networks. Powerful modern technologies, especially in the field of informatics, have long ceased to be mere instruments and have created constraints for human action which act to predetermine activity and predefine purposes.
As a consequence, the metaphysical distinction between subject and object has become blurred. In the 1950s Heidegger already speaks of modern technology not as the negation but as the culmination of metaphysical thought which provokes men to "overcome" metaphysics. The weakening of metaphysical determinations which occurs in the project of modern technology has also meant that it become impossible to clearly define what being human is, and to determine the line that separates non-human from human being. These changes are not progressing at a controllable rate, but they are undergoing constant acceleration. The very efficiency and power of calculation of modern technologies means that acceleration itself is being accelerated. Every new technological development produces new shortcuts in socio-technical systems and in communication.
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Artificial Intelligence is concerned with the simulation of human thinking and emotions in information technology. AI develops "intelligent systems" capable, for example, of learning and logical deduction. AI systems are used for creatively handling large amounts of data (as in data mining), as well as in natural speech processing and image recognition. AI is also used as to support
Yahoo AI sites:
MIT AI lab:
The WAP (Wireless Application Protocol) is a specification for a set of communication protocols to standardize the way that wireless devices, such as cellular telephones and radio transceivers, can be used for Internet access, including
While Internet access has been possible in the past, different manufacturers have used different technologies. In the future, devices and service systems that use WAP will be able to interoperate.
Source: Whatis.com