The United Nations briefly considered the issue of extra-terrestrial intelligence at the 32nd session of the General Assembly in 1977. As a result, the Office of Outer Space Affairs was tasked to prepare a document on issues related to 'messages to extra-terrestrial civilizations', but this area has not been followed through in more recent times. This discussion paper describes the United Natio...

We utilize anthropic reasoning to demonstrate that we are typical observers of our reference class under a self-sampling assumption by investigating the definition of what a civilization is. With reference to the conflict between such reasoning and the observational lack of extra-terrestrial intelligent life, we conclude that a part of our theoretical understanding of the Universe will be at fa...

This research aims at building a preference-based player model of Civilization IV players. Our model incorporates attributes which are defined for AI players. We use a sequential minimal optimization (SMO) classifier to build the player model based on a training set with observations of a large number of games between six AI players. The model was validated on a test set of games between the sa...

With an emphasis on its prominent historical points, this article attempts to take a fresh look at the evolution of political thought in Islam and Iran. This review attempts to identify the milestones of the history of political thought in Iran and in particular, in the Islamic world. By identifying them, the impact of each of the ideas of urban Iran, Sunni Islam, Shiite Islam, the Greek and th...

With a few exceptions, the distant past is an anonymous land occupied by people who made things and left behind a cryptic record of broken pieces. Even when the written word comes into play in human history and we can read the hieroglyphs naming an Egyptian pharaoh and describing royal achievements, the majority of human experience remains unknown and unrecoverable. Archaeologists usually excav...

Written words probably developed independently at least in three places: Egypt, Mesopotamia and Harappa. In these densely populated areas, signs, icons and symbols were eventually used to create a writing system. It is interesting to see how sometimes remote populations are using the same icons and symbols. Here, we discuss examples and some results obtained by researchers investigating the sig...

By the time it had reached its zenith during the second-century of the Common Era, the Roman Empire had developed into one of the greatest civilizations the ancient world had ever known. Cities scattered across an imperial region that stretched from the North Sea to the Red Sea had flourished under a well-ordered governing body housed in Rome. These regional centers stood unfortified in the cou...

The Mexica Empire reached an outstanding social, economic and politic organization among Mesoamerican civilizations. Even though archaeology and history provide substantial information about their past, their biological origin and the demographic consequences of their settlement in the Central Valley of Mexico remain unsolved. Two main hypotheses compete to explain the Mexica origin: a social r...