Article: Avicenna's consideration of the essence-attributes question may be elucidated in terms of his ontological analysis of the modalities of being; namely impossibility, contingency, and necessity. Avicenna argued that the impossible being is that which cannot exist, while the contingent in itself (mumkin bi-dhatihi) has the potentiality to be or not to be without entailing a contradiction. When actualized, the contingent becomes a 'necessary existent due to what is other than itself' (wajib al-wujud bi-ghayrihi). Thus, contingency-in-itself is potential beingness that could eventually be actualized by an external cause other than itself. The metaphysical structures of necessity and contingency are different. Necessary being due to itself (wajib al-wujud bi-dhatihi) is true in itself, while the contingent being is 'false in itself' and 'true due to something else other than itself'. The necessary is the source of its own being without borrowed existence. It is what always exists.

Question: What is one modality of being that Avicenna analyzed?
Ans: necessity


Article: Mill's empiricism thus held that knowledge of any kind is not from direct experience but an inductive inference from direct experience. The problems other philosophers have had with Mill's position center around the following issues: Firstly, Mill's formulation encounters difficulty when it describes what direct experience is by differentiating only between actual and possible sensations. This misses some key discussion concerning conditions under which such "groups of permanent possibilities of sensation" might exist in the first place. Berkeley put God in that gap; the phenomenalists, including Mill, essentially left the question unanswered. In the end, lacking an acknowledgement of an aspect of "reality" that goes beyond mere "possibilities of sensation", such a position leads to a version of subjective idealism. Questions of how floor beams continue to support a floor while unobserved, how trees continue to grow while unobserved and untouched by human hands, etc., remain unanswered, and perhaps unanswerable in these terms. Secondly, Mill's formulation leaves open the unsettling possibility that the "gap-filling entities are purely possibilities and not actualities at all". Thirdly, Mill's position, by calling mathematics merely another species of inductive inference, misapprehends mathematics. It fails to fully consider the structure and method of mathematical science, the products of which are arrived at through an internally consistent deductive set of procedures which do not, either today or at the time Mill wrote, fall under the agreed meaning of induction.

Question: What did Mill say knowledge comes from?
Ans: an inductive inference from direct experience


Article: Hindu scriptures describe hunting as an acceptable occupation, as well as a sport of the kingly. Even figures considered godly are described to have engaged in hunting. One of the names of the god Shiva is Mrigavyadha, which translates as "the deer hunter" (mriga means deer; vyadha means hunter). The word Mriga, in many Indian languages including Malayalam, not only stands for deer, but for all animals and animal instincts (Mriga Thrishna). Shiva, as Mrigavyadha, is the one who destroys the animal instincts in human beings. In the epic Ramayana, Dasharatha, the father of Rama, is said to have the ability to hunt in the dark. During one of his hunting expeditions, he accidentally killed Shravana, mistaking him for game. During Rama's exile in the forest, Ravana kidnapped his wife, Sita, from their hut, while Rama was asked by Sita to capture a golden deer, and his brother Lakshman went after him. According to the Mahabharat, Pandu, the father of the Pandavas, accidentally killed the sage Kindama and his wife with an arrow, mistaking them for a deer. Krishna is said to have died after being accidentally wounded by an arrow of a hunter.

Question: Godly figures have engaged in what activity?
Ans: hunting


Article: As of 2007, the total installed capacity of solar hot water systems is approximately 154 thermal gigawatt (GWth). China is the world leader in their deployment with 70 GWth installed as of 2006 and a long-term goal of 210 GWth by 2020. Israel and Cyprus are the per capita leaders in the use of solar hot water systems with over 90% of homes using them. In the United States, Canada and Australia heating swimming pools is the dominant application of solar hot water with an installed capacity of 18 GWth as of 2005.

Question: What is the capacity of a solar hot water system?
Ans:
approximately 154 thermal gigawatt