Theories about them have to rely on a preponderance of other evidence, which alone are not solid enough to warrant much conclusiveness.

Theories are analytical tools for understanding, explaining, and making predictions about a given subject matter.

* Ingen grenser ( Theories about Odin, Norwegian only ), 1999

* Jakten på Odin ( Theories about Odin, Norwegian only ), 2001

Theories which claim that morality is derived from reasoning about implied imperatives ( universal prescriptivism ), the edicts of a god ( divine command theory ), or the hypothetical decrees of a perfectly rational being ( ideal observer theory ), are considered anti-realist in the robust sense used here, but are considered realist in the sense synonymous with moral universalism.

Theories about the origin of the city's name suggest that it may be a corruption of the Spanish la virgen, after the nearby Virgin River, or possibly an error in the transcription of the term " beaver skin.

Theories that the painting is about duality ( city and country, male and female ) have been dismissed since radiography has shown that in the earlier stages of the painting the soldier to the left was a seated female nude.

Theories have been proposed about the Greek origin of the symbol and its implications.

Theories about what caused berserker behaviour include ingestion of materials with psychoactive properties, psychological processes, and medical conditions.

Theories about the site have focused on the idea of inversion, as represented by the upside-down central tree stump and the single post turned 180 degrees from the others within the circle itself.

Theories held by mainstream Egyptologists about the date of the construction of the Great Sphinx of Giza have been challenged and various alternative theories have been proposed – about the builder or the dating – to explain its construction.

Theories about his identity made at the time included that he was a Marshal of France ; or the English Richard Cromwell, son of Oliver Cromwell ; or François, Duke of Beaufort.

Theories about unobservable phenomena are regarded as having no scientific meaning.

Theories sparked about Olson's having been assassinated by the CIA.

Theories about the origin of the name Reynard are:

* Testing Heyerdahl's Theories about Kon-Tiki 60 Years Later: Tangaroa Pacific Voyage ( Summer 2006 ) Azerbaijan International, Vol 14: 4 ( Winter 2006 )

Theories have been proposed about the implications of the descriptions of the temple and the findings ( or lack thereof ) of the archaeological excavations in the area.

Theories about the processes involved in adult face perception have largely come from two sources: research on normal adult face perception and the study of impairments in face perception that are caused by brain injury or neurological illness.

Theories abound about the evolution of the atelines ; one theory is they are most closely related to the woolly spider monkeys ( Bractyteles ), and most likely split from the woolly monkeys ( Lagothrix and Oreonax ) in the South American lowland forest, to evolve their unique locomotory system.

Theories about his disappearance have suggested that he was murdered, that he ran off with another woman, or that he had been involved in corrupt practices which were about to be revealed, and therefore fled.

Theories have been proposed about the possible appearance of Róta in Gesta Danorum and the meaning of her name.

Theories about the optimum span of control go back to V. A. Graicunas.

Theories addressing heterogeneous electron transfer have applications in electrochemistry and the design of solar cells.

Theories in astrophysical plasma in the Solar system are a fundamental part of plasma cosmology.

* The Delani / Sonnabend Halls-recalling the intertwining story of an ill-fated opera singer, Madalena Delani, with a theoretician of memory, Geoffrey Sonnabend, whose 3-part work Obliscence: Theories of Forgetting and the Problem of Matter suggests that memory is an elaborate construction that humankind has created, " to buffer ourselves against the intolerable knowledge of the irreversible passage of time and the irretrievability of its moments and events.

Theories vary concerning its invention.

Theories exist that its inventor was Christophe Des Rosiers, furniture maker for the French Royal Family, but Marc Andre Jacoud was also rumored to have been the inventor.

Pullin's book ( with R. Gambini ) Loops, Knots, Gauge Theories and Quantum Gravity surveys the state of the art in loop quantum gravity at the time of its publication.

* Wiggershaus, R. The Frankfurt School: its History, Theories, and Political Significance.

Theories of its origin vary.

Theories adding philosophic backing to its own conceptualizations from such ideas as diplomatic recognition and the sovereign state's right to exist as it were extending beyond territorial nation-state in an international structure, to an intranational structure of the voluntary association of those with similar social world views being codified legal frameworks to themselves, within their own sphere of interaction, under a federal government of a particular nation state & relying on infrastructural power for implementation.

Theories of the existence of separate Gothic runes have been advanced, even identifying them as the original alphabet from which the Futhark were derived, but these have little support in findings ( mainly the spearhead of Kovel, with its right-to-left inscription, its T-shaped tiwaz, and its rectangular dagaz ).

In March 2009, the Discovery Institute, a supporter of intelligent design, accused the Templeton Foundation of blocking its involvement in Biological Evolution: Facts and Theories, a Vatican-backed, Templeton-funded conference in Rome.

Theories regarding a self-existent immutable substantial " ground of being " were common in India prior to the Buddha, and were rejected by him: " The Buddha, however, refusing to admit any metaphysical principle as a common thread holding the moments of encountered phenomena together, rejects the Upanishadic notion of an immutable substance or principle underlying the world and the person and producing phenomena out of its inherent power, be it ' being ', atman, brahman, or ' god.

: Towards an Understanding of Theories of Nationalism-Page 202, by Atsuko Ichijo, Gordana Uzelac-2005, reference to Burebasaga Confederacy and its composition

Theories for the formation of the Moon must explain its late formation as well as the following facts.

Theories as to the date of its composition place it in a range from the late 1st century AD to the second half of the 2nd century AD.

Theories concerning its disappearance range from destruction by a meteor swarm, to the human overlords making the mistake of allocating too much power to the machines and, during the journey to Mars, in a move much akin to HAL 9000's the few humans remaining were exterminated by the machines they created.

* Numerological: Theories that the measurements of the Great Pyramid and its passages are esoterically significant, and their geometric measurements contain some encoded message.

While Marx used the concept of the law of value in his works Grundrisse, A Contribution to the Critique of Political Economy, Theories of Surplus Value and Das Kapital, he did not explicitly formalise its full meaning in a mathematical sense, and therefore how it should be exactly defined remains to some extent a controversial topic in Marxian economics.

Though many “ Theories about innate human predispositions are extremely difficult to verify ” the Somatic Marker Hypothesis has clear evidence leading to its validity as tested in the Iowa Gambling Task.